678077320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{20749}}^1$

素因数の和:20822

約数の個数: 64

約数和(自身を含む): 1643400000

約数和(自身を除く): 965322680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 760, 817, 860, 1634, 1720, 3268, 4085, 6536, 8170, 16340, 20749, 32680, 41498, 82996, 103745, 165992, 207490, 394231, 414980, 788462, 829960, 892207, 1576924, 1784414, 1971155, 3153848, 3568828, 3942310, 4461035, 7137656, 7884620, 8922070, 15769240, 16951933, 17844140, 33903866, 35688280, 67807732, 84759665, 135615464, 169519330, 339038660, 678077320]

約数ペア:

[(1, 678077320), (2, 339038660), (4, 169519330), (5, 135615464), (8, 84759665), (10, 67807732), (19, 35688280), (20, 33903866), (38, 17844140), (40, 16951933), (43, 15769240), (76, 8922070), (86, 7884620), (95, 7137656), (152, 4461035), (172, 3942310), (190, 3568828), (215, 3153848), (344, 1971155), (380, 1784414), (430, 1576924), (760, 892207), (817, 829960), (860, 788462), (1634, 414980), (1720, 394231), (3268, 207490), (4085, 165992), (6536, 103745), (8170, 82996), (16340, 41498), (20749, 32680)]