81244620

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{73}}^1\times {\mathrm{229}}^1$

素因数の和:326

約数の個数: 144

約数和(自身を含む): 260201760

約数和(自身を除く): 178957140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 73, 81, 90, 108, 135, 146, 162, 180, 219, 229, 243, 270, 292, 324, 365, 405, 438, 458, 486, 540, 657, 687, 730, 810, 876, 916, 972, 1095, 1145, 1215, 1314, 1374, 1460, 1620, 1971, 2061, 2190, 2290, 2430, 2628, 2748, 3285, 3435, 3942, 4122, 4380, 4580, 4860, 5913, 6183, 6570, 6870, 7884, 8244, 9855, 10305, 11826, 12366, 13140, 13740, 16717, 17739, 18549, 19710, 20610, 23652, 24732, 29565, 30915, 33434, 35478, 37098, 39420, 41220, 50151, 55647, 59130, 61830, 66868, 70956, 74196, 83585, 88695, 92745, 100302, 111294, 118260, 123660, 150453, 167170, 177390, 185490, 200604, 222588, 250755, 278235, 300906, 334340, 354780, 370980, 451359, 501510, 556470, 601812, 752265, 902718, 1003020, 1112940, 1354077, 1504530, 1805436, 2256795, 2708154, 3009060, 4062231, 4513590, 5416308, 6770385, 8124462, 9027180, 13540770, 16248924, 20311155, 27081540, 40622310, 81244620]

約数ペア:

[(1, 81244620), (2, 40622310), (3, 27081540), (4, 20311155), (5, 16248924), (6, 13540770), (9, 9027180), (10, 8124462), (12, 6770385), (15, 5416308), (18, 4513590), (20, 4062231), (27, 3009060), (30, 2708154), (36, 2256795), (45, 1805436), (54, 1504530), (60, 1354077), (73, 1112940), (81, 1003020), (90, 902718), (108, 752265), (135, 601812), (146, 556470), (162, 501510), (180, 451359), (219, 370980), (229, 354780), (243, 334340), (270, 300906), (292, 278235), (324, 250755), (365, 222588), (405, 200604), (438, 185490), (458, 177390), (486, 167170), (540, 150453), (657, 123660), (687, 118260), (730, 111294), (810, 100302), (876, 92745), (916, 88695), (972, 83585), (1095, 74196), (1145, 70956), (1215, 66868), (1314, 61830), (1374, 59130), (1460, 55647), (1620, 50151), (1971, 41220), (2061, 39420), (2190, 37098), (2290, 35478), (2430, 33434), (2628, 30915), (2748, 29565), (3285, 24732), (3435, 23652), (3942, 20610), (4122, 19710), (4380, 18549), (4580, 17739), (4860, 16717), (5913, 13740), (6183, 13140), (6570, 12366), (6870, 11826), (7884, 10305), (8244, 9855)]