19992520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{701}}^1$

素因数の和:766

約数の個数: 64

約数和(自身を含む): 48522240

約数和(自身を除く): 28529720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 31, 40, 46, 62, 92, 115, 124, 155, 184, 230, 248, 310, 460, 620, 701, 713, 920, 1240, 1402, 1426, 2804, 2852, 3505, 3565, 5608, 5704, 7010, 7130, 14020, 14260, 16123, 21731, 28040, 28520, 32246, 43462, 64492, 80615, 86924, 108655, 128984, 161230, 173848, 217310, 322460, 434620, 499813, 644920, 869240, 999626, 1999252, 2499065, 3998504, 4998130, 9996260, 19992520]

約数ペア:

[(1, 19992520), (2, 9996260), (4, 4998130), (5, 3998504), (8, 2499065), (10, 1999252), (20, 999626), (23, 869240), (31, 644920), (40, 499813), (46, 434620), (62, 322460), (92, 217310), (115, 173848), (124, 161230), (155, 128984), (184, 108655), (230, 86924), (248, 80615), (310, 64492), (460, 43462), (620, 32246), (701, 28520), (713, 28040), (920, 21731), (1240, 16123), (1402, 14260), (1426, 14020), (2804, 7130), (2852, 7010), (3505, 5704), (3565, 5608)]