20845680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86857}}^1$

素因数の和:86873

約数の個数: 40

約数和(自身を含む): 64622352

約数和(自身を除く): 43776672

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86857, 173714, 260571, 347428, 434285, 521142, 694856, 868570, 1042284, 1302855, 1389712, 1737140, 2084568, 2605710, 3474280, 4169136, 5211420, 6948560, 10422840, 20845680]

約数ペア:

[(1, 20845680), (2, 10422840), (3, 6948560), (4, 5211420), (5, 4169136), (6, 3474280), (8, 2605710), (10, 2084568), (12, 1737140), (15, 1389712), (16, 1302855), (20, 1042284), (24, 868570), (30, 694856), (40, 521142), (48, 434285), (60, 347428), (80, 260571), (120, 173714), (240, 86857)]