688737920

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82781}}^1$

素因数の和:82813

約数の個数: 64

約数和(自身を含む): 1773190440

約数和(自身を除く): 1084452520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 4160, 8320, 82781, 165562, 331124, 413905, 662248, 827810, 1076153, 1324496, 1655620, 2152306, 2648992, 3311240, 4304612, 5297984, 5380765, 6622480, 8609224, 10595968, 10761530, 13244960, 17218448, 21523060, 26489920, 34436896, 43046120, 52979840, 68873792, 86092240, 137747584, 172184480, 344368960, 688737920]

約数ペア:

[(1, 688737920), (2, 344368960), (4, 172184480), (5, 137747584), (8, 86092240), (10, 68873792), (13, 52979840), (16, 43046120), (20, 34436896), (26, 26489920), (32, 21523060), (40, 17218448), (52, 13244960), (64, 10761530), (65, 10595968), (80, 8609224), (104, 6622480), (128, 5380765), (130, 5297984), (160, 4304612), (208, 3311240), (260, 2648992), (320, 2152306), (416, 1655620), (520, 1324496), (640, 1076153), (832, 827810), (1040, 662248), (1664, 413905), (2080, 331124), (4160, 165562), (8320, 82781)]