21361860

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1$

素因数の和:227

約数の個数: 192

約数和(自身を含む): 76204800

約数和(自身を除く): 54842940

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, 85, 90, 102, 108, 117, 130, 135, 153, 156, 170, 179, 180, 195, 204, 221, 234, 255, 260, 270, 306, 340, 351, 358, 390, 442, 459, 468, 510, 537, 540, 585, 612, 663, 702, 716, 765, 780, 884, 895, 918, 1020, 1074, 1105, 1170, 1326, 1404, 1530, 1611, 1755, 1790, 1836, 1989, 2148, 2210, 2295, 2327, 2340, 2652, 2685, 3043, 3060, 3222, 3315, 3510, 3580, 3978, 4420, 4590, 4654, 4833, 5370, 5967, 6086, 6444, 6630, 6981, 7020, 7956, 8055, 9129, 9180, 9308, 9666, 9945, 10740, 11635, 11934, 12172, 13260, 13962, 15215, 16110, 18258, 19332, 19890, 20943, 23270, 23868, 24165, 27387, 27924, 29835, 30430, 32220, 34905, 36516, 39559, 39780, 41886, 45645, 46540, 48330, 54774, 59670, 60860, 62829, 69810, 79118, 82161, 83772, 91290, 96660, 104715, 109548, 118677, 119340, 125658, 136935, 139620, 158236, 164322, 182580, 197795, 209430, 237354, 251316, 273870, 314145, 328644, 356031, 395590, 410805, 418860, 474708, 547740, 593385, 628290, 712062, 791180, 821610, 1068093, 1186770, 1256580, 1424124, 1643220, 1780155, 2136186, 2373540, 3560310, 4272372, 5340465, 7120620, 10680930, 21361860]

約数ペア:

[(1, 21361860), (2, 10680930), (3, 7120620), (4, 5340465), (5, 4272372), (6, 3560310), (9, 2373540), (10, 2136186), (12, 1780155), (13, 1643220), (15, 1424124), (17, 1256580), (18, 1186770), (20, 1068093), (26, 821610), (27, 791180), (30, 712062), (34, 628290), (36, 593385), (39, 547740), (45, 474708), (51, 418860), (52, 410805), (54, 395590), (60, 356031), (65, 328644), (68, 314145), (78, 273870), (85, 251316), (90, 237354), (102, 209430), (108, 197795), (117, 182580), (130, 164322), (135, 158236), (153, 139620), (156, 136935), (170, 125658), (179, 119340), (180, 118677), (195, 109548), (204, 104715), (221, 96660), (234, 91290), (255, 83772), (260, 82161), (270, 79118), (306, 69810), (340, 62829), (351, 60860), (358, 59670), (390, 54774), (442, 48330), (459, 46540), (468, 45645), (510, 41886), (537, 39780), (540, 39559), (585, 36516), (612, 34905), (663, 32220), (702, 30430), (716, 29835), (765, 27924), (780, 27387), (884, 24165), (895, 23868), (918, 23270), (1020, 20943), (1074, 19890), (1105, 19332), (1170, 18258), (1326, 16110), (1404, 15215), (1530, 13962), (1611, 13260), (1755, 12172), (1790, 11934), (1836, 11635), (1989, 10740), (2148, 9945), (2210, 9666), (2295, 9308), (2327, 9180), (2340, 9129), (2652, 8055), (2685, 7956), (3043, 7020), (3060, 6981), (3222, 6630), (3315, 6444), (3510, 6086), (3580, 5967), (3978, 5370), (4420, 4833), (4590, 4654)]