20823590

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{211}}^1$

素因数の和:428

約数の個数: 32

約数和(自身を含む): 38465280

約数和(自身を除く): 17641690

約数列:

[1, 2, 5, 10, 71, 139, 142, 211, 278, 355, 422, 695, 710, 1055, 1390, 2110, 9869, 14981, 19738, 29329, 29962, 49345, 58658, 74905, 98690, 146645, 149810, 293290, 2082359, 4164718, 10411795, 20823590]

約数ペア:

[(1, 20823590), (2, 10411795), (5, 4164718), (10, 2082359), (71, 293290), (139, 149810), (142, 146645), (211, 98690), (278, 74905), (355, 58658), (422, 49345), (695, 29962), (710, 29329), (1055, 19738), (1390, 14981), (2110, 9869)]