81986580

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{229}}^1$

素因数の和:280

約数の個数: 240

約数和(自身を含む): 294552720

約数和(自身を除く): 212566140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 17, 18, 20, 26, 27, 30, 34, 36, 39, 45, 51, 52, 54, 60, 65, 68, 78, 81, 85, 90, 102, 108, 117, 130, 135, 153, 156, 162, 170, 180, 195, 204, 221, 229, 234, 255, 260, 270, 306, 324, 340, 351, 390, 405, 442, 458, 459, 468, 510, 540, 585, 612, 663, 687, 702, 765, 780, 810, 884, 916, 918, 1020, 1053, 1105, 1145, 1170, 1326, 1374, 1377, 1404, 1530, 1620, 1755, 1836, 1989, 2061, 2106, 2210, 2290, 2295, 2340, 2652, 2748, 2754, 2977, 3060, 3315, 3435, 3510, 3893, 3978, 4122, 4212, 4420, 4580, 4590, 5265, 5508, 5954, 5967, 6183, 6630, 6870, 6885, 7020, 7786, 7956, 8244, 8931, 9180, 9945, 10305, 10530, 11679, 11908, 11934, 12366, 13260, 13740, 13770, 14885, 15572, 17862, 17901, 18549, 19465, 19890, 20610, 21060, 23358, 23868, 24732, 26793, 27540, 29770, 29835, 30915, 35037, 35724, 35802, 37098, 38930, 39780, 41220, 44655, 46716, 50609, 53586, 58395, 59540, 59670, 61830, 70074, 71604, 74196, 77860, 80379, 89310, 89505, 92745, 101218, 105111, 107172, 116790, 119340, 123660, 133965, 140148, 151827, 160758, 175185, 178620, 179010, 185490, 202436, 210222, 233580, 241137, 253045, 267930, 303654, 315333, 321516, 350370, 358020, 370980, 401895, 420444, 455481, 482274, 506090, 525555, 535860, 607308, 630666, 700740, 759135, 803790, 910962, 964548, 1012180, 1051110, 1205685, 1261332, 1366443, 1518270, 1576665, 1607580, 1821924, 2102220, 2277405, 2411370, 2732886, 3036540, 3153330, 4099329, 4554810, 4822740, 5465772, 6306660, 6832215, 8198658, 9109620, 13664430, 16397316, 20496645, 27328860, 40993290, 81986580]

約数ペア:

[(1, 81986580), (2, 40993290), (3, 27328860), (4, 20496645), (5, 16397316), (6, 13664430), (9, 9109620), (10, 8198658), (12, 6832215), (13, 6306660), (15, 5465772), (17, 4822740), (18, 4554810), (20, 4099329), (26, 3153330), (27, 3036540), (30, 2732886), (34, 2411370), (36, 2277405), (39, 2102220), (45, 1821924), (51, 1607580), (52, 1576665), (54, 1518270), (60, 1366443), (65, 1261332), (68, 1205685), (78, 1051110), (81, 1012180), (85, 964548), (90, 910962), (102, 803790), (108, 759135), (117, 700740), (130, 630666), (135, 607308), (153, 535860), (156, 525555), (162, 506090), (170, 482274), (180, 455481), (195, 420444), (204, 401895), (221, 370980), (229, 358020), (234, 350370), (255, 321516), (260, 315333), (270, 303654), (306, 267930), (324, 253045), (340, 241137), (351, 233580), (390, 210222), (405, 202436), (442, 185490), (458, 179010), (459, 178620), (468, 175185), (510, 160758), (540, 151827), (585, 140148), (612, 133965), (663, 123660), (687, 119340), (702, 116790), (765, 107172), (780, 105111), (810, 101218), (884, 92745), (916, 89505), (918, 89310), (1020, 80379), (1053, 77860), (1105, 74196), (1145, 71604), (1170, 70074), (1326, 61830), (1374, 59670), (1377, 59540), (1404, 58395), (1530, 53586), (1620, 50609), (1755, 46716), (1836, 44655), (1989, 41220), (2061, 39780), (2106, 38930), (2210, 37098), (2290, 35802), (2295, 35724), (2340, 35037), (2652, 30915), (2748, 29835), (2754, 29770), (2977, 27540), (3060, 26793), (3315, 24732), (3435, 23868), (3510, 23358), (3893, 21060), (3978, 20610), (4122, 19890), (4212, 19465), (4420, 18549), (4580, 17901), (4590, 17862), (5265, 15572), (5508, 14885), (5954, 13770), (5967, 13740), (6183, 13260), (6630, 12366), (6870, 11934), (6885, 11908), (7020, 11679), (7786, 10530), (7956, 10305), (8244, 9945), (8931, 9180)]