648977680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{32843}}^1$

素因数の和:32888

約数の個数: 80

約数和(自身を含む): 1710515520

約数和(自身を除く): 1061537840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1520, 1976, 2470, 3952, 4940, 9880, 19760, 32843, 65686, 131372, 164215, 262744, 328430, 426959, 525488, 624017, 656860, 853918, 1248034, 1313720, 1707836, 2134795, 2496068, 2627440, 3120085, 3415672, 4269590, 4992136, 6240170, 6831344, 8112221, 8539180, 9984272, 12480340, 16224442, 17078360, 24960680, 32448884, 34156720, 40561105, 49921360, 64897768, 81122210, 129795536, 162244420, 324488840, 648977680]

約数ペア:

[(1, 648977680), (2, 324488840), (4, 162244420), (5, 129795536), (8, 81122210), (10, 64897768), (13, 49921360), (16, 40561105), (19, 34156720), (20, 32448884), (26, 24960680), (38, 17078360), (40, 16224442), (52, 12480340), (65, 9984272), (76, 8539180), (80, 8112221), (95, 6831344), (104, 6240170), (130, 4992136), (152, 4269590), (190, 3415672), (208, 3120085), (247, 2627440), (260, 2496068), (304, 2134795), (380, 1707836), (494, 1313720), (520, 1248034), (760, 853918), (988, 656860), (1040, 624017), (1235, 525488), (1520, 426959), (1976, 328430), (2470, 262744), (3952, 164215), (4940, 131372), (9880, 65686), (19760, 32843)]