870345740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{181}}^1\times {\mathrm{1987}}^1$

素因数の和:2199

約数の個数: 72

約数和(自身を含む): 2021104176

約数和(自身を除く): 1150758436

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 181, 220, 242, 362, 484, 605, 724, 905, 1210, 1810, 1987, 1991, 2420, 3620, 3974, 3982, 7948, 7964, 9935, 9955, 19870, 19910, 21857, 21901, 39740, 39820, 43714, 43802, 87428, 87604, 109285, 109505, 218570, 219010, 240427, 359647, 437140, 438020, 480854, 719294, 961708, 1202135, 1438588, 1798235, 2404270, 3596470, 3956117, 4808540, 7192940, 7912234, 15824468, 19780585, 39561170, 43517287, 79122340, 87034574, 174069148, 217586435, 435172870, 870345740]

約数ペア:

[(1, 870345740), (2, 435172870), (4, 217586435), (5, 174069148), (10, 87034574), (11, 79122340), (20, 43517287), (22, 39561170), (44, 19780585), (55, 15824468), (110, 7912234), (121, 7192940), (181, 4808540), (220, 3956117), (242, 3596470), (362, 2404270), (484, 1798235), (605, 1438588), (724, 1202135), (905, 961708), (1210, 719294), (1810, 480854), (1987, 438020), (1991, 437140), (2420, 359647), (3620, 240427), (3974, 219010), (3982, 218570), (7948, 109505), (7964, 109285), (9935, 87604), (9955, 87428), (19870, 43802), (19910, 43714), (21857, 39820), (21901, 39740)]