20740920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{307}}^1\times {\mathrm{563}}^1$

素因数の和:884

約数の個数: 64

約数和(自身を含む): 62536320

約数和(自身を除く): 41795400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 307, 563, 614, 921, 1126, 1228, 1535, 1689, 1842, 2252, 2456, 2815, 3070, 3378, 3684, 4504, 4605, 5630, 6140, 6756, 7368, 8445, 9210, 11260, 12280, 13512, 16890, 18420, 22520, 33780, 36840, 67560, 172841, 345682, 518523, 691364, 864205, 1037046, 1382728, 1728410, 2074092, 2592615, 3456820, 4148184, 5185230, 6913640, 10370460, 20740920]

約数ペア:

[(1, 20740920), (2, 10370460), (3, 6913640), (4, 5185230), (5, 4148184), (6, 3456820), (8, 2592615), (10, 2074092), (12, 1728410), (15, 1382728), (20, 1037046), (24, 864205), (30, 691364), (40, 518523), (60, 345682), (120, 172841), (307, 67560), (563, 36840), (614, 33780), (921, 22520), (1126, 18420), (1228, 16890), (1535, 13512), (1689, 12280), (1842, 11260), (2252, 9210), (2456, 8445), (2815, 7368), (3070, 6756), (3378, 6140), (3684, 5630), (4504, 4605)]