20199145940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{385039}}^1$

素因数の和:385152

約数の個数: 48

約数和(自身を含む): 44116343040

約数和(自身を除く): 23917197100

約数列:

[1, 2, 4, 5, 10, 20, 43, 61, 86, 122, 172, 215, 244, 305, 430, 610, 860, 1220, 2623, 5246, 10492, 13115, 26230, 52460, 385039, 770078, 1540156, 1925195, 3850390, 7700780, 16556677, 23487379, 33113354, 46974758, 66226708, 82783385, 93949516, 117436895, 165566770, 234873790, 331133540, 469747580, 1009957297, 2019914594, 4039829188, 5049786485, 10099572970, 20199145940]

約数ペア:

[(1, 20199145940), (2, 10099572970), (4, 5049786485), (5, 4039829188), (10, 2019914594), (20, 1009957297), (43, 469747580), (61, 331133540), (86, 234873790), (122, 165566770), (172, 117436895), (215, 93949516), (244, 82783385), (305, 66226708), (430, 46974758), (610, 33113354), (860, 23487379), (1220, 16556677), (2623, 7700780), (5246, 3850390), (10492, 1925195), (13115, 1540156), (26230, 770078), (52460, 385039)]