20435120

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1627}}^1$

素因数の和:1797

約数の個数: 40

約数和(自身を含む): 47843664

約数和(自身を除く): 27408544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 314, 628, 785, 1256, 1570, 1627, 2512, 3140, 3254, 6280, 6508, 8135, 12560, 13016, 16270, 26032, 32540, 65080, 130160, 255439, 510878, 1021756, 1277195, 2043512, 2554390, 4087024, 5108780, 10217560, 20435120]

約数ペア:

[(1, 20435120), (2, 10217560), (4, 5108780), (5, 4087024), (8, 2554390), (10, 2043512), (16, 1277195), (20, 1021756), (40, 510878), (80, 255439), (157, 130160), (314, 65080), (628, 32540), (785, 26032), (1256, 16270), (1570, 13016), (1627, 12560), (2512, 8135), (3140, 6508), (3254, 6280)]