21851960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{42023}}^1$

素因数の和:42047

約数の個数: 32

約数和(自身を含む): 52950240

約数和(自身を除く): 31098280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 42023, 84046, 168092, 210115, 336184, 420230, 546299, 840460, 1092598, 1680920, 2185196, 2731495, 4370392, 5462990, 10925980, 21851960]

約数ペア:

[(1, 21851960), (2, 10925980), (4, 5462990), (5, 4370392), (8, 2731495), (10, 2185196), (13, 1680920), (20, 1092598), (26, 840460), (40, 546299), (52, 420230), (65, 336184), (104, 210115), (130, 168092), (260, 84046), (520, 42023)]