28211240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{22751}}^1$

素因数の和:22793

約数の個数: 32

約数和(自身を含む): 65525760

約数和(自身を除く): 37314520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 22751, 45502, 91004, 113755, 182008, 227510, 455020, 705281, 910040, 1410562, 2821124, 3526405, 5642248, 7052810, 14105620, 28211240]

約数ペア:

[(1, 28211240), (2, 14105620), (4, 7052810), (5, 5642248), (8, 3526405), (10, 2821124), (20, 1410562), (31, 910040), (40, 705281), (62, 455020), (124, 227510), (155, 182008), (248, 113755), (310, 91004), (620, 45502), (1240, 22751)]