68646680

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{643}}^1$

素因数の和:828

約数の個数: 64

約数和(自身を含む): 164838240

約数和(自身を除く): 96191560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 157, 170, 314, 340, 628, 643, 680, 785, 1256, 1286, 1570, 2572, 2669, 3140, 3215, 5144, 5338, 6280, 6430, 10676, 10931, 12860, 13345, 21352, 21862, 25720, 26690, 43724, 53380, 54655, 87448, 100951, 106760, 109310, 201902, 218620, 403804, 437240, 504755, 807608, 1009510, 1716167, 2019020, 3432334, 4038040, 6864668, 8580835, 13729336, 17161670, 34323340, 68646680]

約数ペア:

[(1, 68646680), (2, 34323340), (4, 17161670), (5, 13729336), (8, 8580835), (10, 6864668), (17, 4038040), (20, 3432334), (34, 2019020), (40, 1716167), (68, 1009510), (85, 807608), (136, 504755), (157, 437240), (170, 403804), (314, 218620), (340, 201902), (628, 109310), (643, 106760), (680, 100951), (785, 87448), (1256, 54655), (1286, 53380), (1570, 43724), (2572, 26690), (2669, 25720), (3140, 21862), (3215, 21352), (5144, 13345), (5338, 12860), (6280, 10931), (6430, 10676)]