640428528040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{683}}^1\times {\mathrm{478403}}^1$

素因数の和:479111

約数の個数: 96

約数和(自身を含む): 1678681363680

約数和(自身を除く): 1038252835640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 683, 980, 1366, 1960, 2732, 3415, 4781, 5464, 6830, 9562, 13660, 19124, 23905, 27320, 33467, 38248, 47810, 66934, 95620, 133868, 167335, 191240, 267736, 334670, 478403, 669340, 956806, 1338680, 1913612, 2392015, 3348821, 3827224, 4784030, 6697642, 9568060, 13395284, 16744105, 19136120, 23441747, 26790568, 33488210, 46883494, 66976420, 93766988, 117208735, 133952840, 187533976, 234417470, 326749249, 468834940, 653498498, 937669880, 1306996996, 1633746245, 2287244743, 2613993992, 3267492490, 4574489486, 6534984980, 9148978972, 11436223715, 13069969960, 16010713201, 18297957944, 22872447430, 32021426402, 45744894860, 64042852804, 80053566005, 91489789720, 128085705608, 160107132010, 320214264020, 640428528040]

約数ペア:

[(1, 640428528040), (2, 320214264020), (4, 160107132010), (5, 128085705608), (7, 91489789720), (8, 80053566005), (10, 64042852804), (14, 45744894860), (20, 32021426402), (28, 22872447430), (35, 18297957944), (40, 16010713201), (49, 13069969960), (56, 11436223715), (70, 9148978972), (98, 6534984980), (140, 4574489486), (196, 3267492490), (245, 2613993992), (280, 2287244743), (392, 1633746245), (490, 1306996996), (683, 937669880), (980, 653498498), (1366, 468834940), (1960, 326749249), (2732, 234417470), (3415, 187533976), (4781, 133952840), (5464, 117208735), (6830, 93766988), (9562, 66976420), (13660, 46883494), (19124, 33488210), (23905, 26790568), (27320, 23441747), (33467, 19136120), (38248, 16744105), (47810, 13395284), (66934, 9568060), (95620, 6697642), (133868, 4784030), (167335, 3827224), (191240, 3348821), (267736, 2392015), (334670, 1913612), (478403, 1338680), (669340, 956806)]