21151610

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^3\times {\mathrm{71}}^1$

素因数の和:171

約数の個数: 32

約数和(自身を含む): 39896064

約数和(自身を除く): 18744454

約数列:

[1, 2, 5, 10, 31, 62, 71, 142, 155, 310, 355, 710, 961, 1922, 2201, 4402, 4805, 9610, 11005, 22010, 29791, 59582, 68231, 136462, 148955, 297910, 341155, 682310, 2115161, 4230322, 10575805, 21151610]

約数ペア:

[(1, 21151610), (2, 10575805), (5, 4230322), (10, 2115161), (31, 682310), (62, 341155), (71, 297910), (142, 148955), (155, 136462), (310, 68231), (355, 59582), (710, 29791), (961, 22010), (1922, 11005), (2201, 9610), (4402, 4805)]