20590550

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:273

約数の個数: 48

約数和(自身を含む): 40085232

約数和(自身を除く): 19494682

約数列:

[1, 2, 5, 10, 25, 43, 50, 61, 86, 122, 157, 215, 305, 314, 430, 610, 785, 1075, 1525, 1570, 2150, 2623, 3050, 3925, 5246, 6751, 7850, 9577, 13115, 13502, 19154, 26230, 33755, 47885, 65575, 67510, 95770, 131150, 168775, 239425, 337550, 411811, 478850, 823622, 2059055, 4118110, 10295275, 20590550]

約数ペア:

[(1, 20590550), (2, 10295275), (5, 4118110), (10, 2059055), (25, 823622), (43, 478850), (50, 411811), (61, 337550), (86, 239425), (122, 168775), (157, 131150), (215, 95770), (305, 67510), (314, 65575), (430, 47885), (610, 33755), (785, 26230), (1075, 19154), (1525, 13502), (1570, 13115), (2150, 9577), (2623, 7850), (3050, 6751), (3925, 5246)]