28026020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{313}}^1$

素因数の和:381

約数の個数: 72

約数和(自身を含む): 66652152

約数和(自身を除く): 38626132

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 121, 148, 185, 220, 242, 313, 370, 407, 484, 605, 626, 740, 814, 1210, 1252, 1565, 1628, 2035, 2420, 3130, 3443, 4070, 4477, 6260, 6886, 8140, 8954, 11581, 13772, 17215, 17908, 22385, 23162, 34430, 37873, 44770, 46324, 57905, 68860, 75746, 89540, 115810, 127391, 151492, 189365, 231620, 254782, 378730, 509564, 636955, 757460, 1273910, 1401301, 2547820, 2802602, 5605204, 7006505, 14013010, 28026020]

約数ペア:

[(1, 28026020), (2, 14013010), (4, 7006505), (5, 5605204), (10, 2802602), (11, 2547820), (20, 1401301), (22, 1273910), (37, 757460), (44, 636955), (55, 509564), (74, 378730), (110, 254782), (121, 231620), (148, 189365), (185, 151492), (220, 127391), (242, 115810), (313, 89540), (370, 75746), (407, 68860), (484, 57905), (605, 46324), (626, 44770), (740, 37873), (814, 34430), (1210, 23162), (1252, 22385), (1565, 17908), (1628, 17215), (2035, 13772), (2420, 11581), (3130, 8954), (3443, 8140), (4070, 6886), (4477, 6260)]