25218820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{613}}^1$

素因数の和:661

約数の個数: 72

約数和(自身を含む): 61736472

約数和(自身を除く): 36517652

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 121, 170, 187, 220, 242, 340, 374, 484, 605, 613, 748, 935, 1210, 1226, 1870, 2057, 2420, 2452, 3065, 3740, 4114, 6130, 6743, 8228, 10285, 10421, 12260, 13486, 20570, 20842, 26972, 33715, 41140, 41684, 52105, 67430, 74173, 104210, 114631, 134860, 148346, 208420, 229262, 296692, 370865, 458524, 573155, 741730, 1146310, 1260941, 1483460, 2292620, 2521882, 5043764, 6304705, 12609410, 25218820]

約数ペア:

[(1, 25218820), (2, 12609410), (4, 6304705), (5, 5043764), (10, 2521882), (11, 2292620), (17, 1483460), (20, 1260941), (22, 1146310), (34, 741730), (44, 573155), (55, 458524), (68, 370865), (85, 296692), (110, 229262), (121, 208420), (170, 148346), (187, 134860), (220, 114631), (242, 104210), (340, 74173), (374, 67430), (484, 52105), (605, 41684), (613, 41140), (748, 33715), (935, 26972), (1210, 20842), (1226, 20570), (1870, 13486), (2057, 12260), (2420, 10421), (2452, 10285), (3065, 8228), (3740, 6743), (4114, 6130)]