20664170

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{307}}^1$

素因数の和:494

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 17655958

約数列:

[1, 2, 5, 10, 53, 106, 127, 254, 265, 307, 530, 614, 635, 1270, 1535, 3070, 6731, 13462, 16271, 32542, 33655, 38989, 67310, 77978, 81355, 162710, 194945, 389890, 2066417, 4132834, 10332085, 20664170]

約数ペア:

[(1, 20664170), (2, 10332085), (5, 4132834), (10, 2066417), (53, 389890), (106, 194945), (127, 162710), (254, 81355), (265, 77978), (307, 67310), (530, 38989), (614, 33655), (635, 32542), (1270, 16271), (1535, 13462), (3070, 6731)]