81807960

素因数分解:

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

素因数の和:485

約数の個数: 96

約数和(自身を含む): 265461840

約数和(自身を除く): 183653880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 229, 260, 312, 390, 458, 520, 687, 780, 916, 1145, 1374, 1560, 1832, 2290, 2748, 2977, 3435, 4580, 5496, 5954, 6870, 8931, 9160, 11908, 13740, 14885, 17862, 23816, 27480, 29770, 35724, 44655, 52441, 59540, 71448, 89310, 104882, 119080, 157323, 178620, 209764, 262205, 314646, 357240, 419528, 524410, 629292, 681733, 786615, 1048820, 1258584, 1363466, 1573230, 2045199, 2097640, 2726932, 3146460, 3408665, 4090398, 5453864, 6292920, 6817330, 8180796, 10225995, 13634660, 16361592, 20451990, 27269320, 40903980, 81807960]

約数ペア:

[(1, 81807960), (2, 40903980), (3, 27269320), (4, 20451990), (5, 16361592), (6, 13634660), (8, 10225995), (10, 8180796), (12, 6817330), (13, 6292920), (15, 5453864), (20, 4090398), (24, 3408665), (26, 3146460), (30, 2726932), (39, 2097640), (40, 2045199), (52, 1573230), (60, 1363466), (65, 1258584), (78, 1048820), (104, 786615), (120, 681733), (130, 629292), (156, 524410), (195, 419528), (229, 357240), (260, 314646), (312, 262205), (390, 209764), (458, 178620), (520, 157323), (687, 119080), (780, 104882), (916, 89310), (1145, 71448), (1374, 59540), (1560, 52441), (1832, 44655), (2290, 35724), (2748, 29770), (2977, 27480), (3435, 23816), (4580, 17862), (5496, 14885), (5954, 13740), (6870, 11908), (8931, 9160)]