20161383880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{631}}^1\times {\mathrm{72617}}^1$

素因数の和:73270

約数の個数: 64

約数和(自身を含む): 49566142080

約数和(自身を除く): 29404758200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 631, 1262, 2524, 3155, 5048, 6310, 6941, 12620, 13882, 25240, 27764, 34705, 55528, 69410, 72617, 138820, 145234, 277640, 290468, 363085, 580936, 726170, 798787, 1452340, 1597574, 2904680, 3195148, 3993935, 6390296, 7987870, 15975740, 31951480, 45821327, 91642654, 183285308, 229106635, 366570616, 458213270, 504034597, 916426540, 1008069194, 1832853080, 2016138388, 2520172985, 4032276776, 5040345970, 10080691940, 20161383880]

約数ペア:

[(1, 20161383880), (2, 10080691940), (4, 5040345970), (5, 4032276776), (8, 2520172985), (10, 2016138388), (11, 1832853080), (20, 1008069194), (22, 916426540), (40, 504034597), (44, 458213270), (55, 366570616), (88, 229106635), (110, 183285308), (220, 91642654), (440, 45821327), (631, 31951480), (1262, 15975740), (2524, 7987870), (3155, 6390296), (5048, 3993935), (6310, 3195148), (6941, 2904680), (12620, 1597574), (13882, 1452340), (25240, 798787), (27764, 726170), (34705, 580936), (55528, 363085), (69410, 290468), (72617, 277640), (138820, 145234)]