2178859920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{394721}}^1$

素因数の和:394760

約数の個数: 80

約数和(自身を含む): 7048156032

約数和(自身を除く): 4869296112

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 60, 69, 80, 92, 115, 120, 138, 184, 230, 240, 276, 345, 368, 460, 552, 690, 920, 1104, 1380, 1840, 2760, 5520, 394721, 789442, 1184163, 1578884, 1973605, 2368326, 3157768, 3947210, 4736652, 5920815, 6315536, 7894420, 9078583, 9473304, 11841630, 15788840, 18157166, 18946608, 23683260, 27235749, 31577680, 36314332, 45392915, 47366520, 54471498, 72628664, 90785830, 94733040, 108942996, 136178745, 145257328, 181571660, 217885992, 272357490, 363143320, 435771984, 544714980, 726286640, 1089429960, 2178859920]

約数ペア:

[(1, 2178859920), (2, 1089429960), (3, 726286640), (4, 544714980), (5, 435771984), (6, 363143320), (8, 272357490), (10, 217885992), (12, 181571660), (15, 145257328), (16, 136178745), (20, 108942996), (23, 94733040), (24, 90785830), (30, 72628664), (40, 54471498), (46, 47366520), (48, 45392915), (60, 36314332), (69, 31577680), (80, 27235749), (92, 23683260), (115, 18946608), (120, 18157166), (138, 15788840), (184, 11841630), (230, 9473304), (240, 9078583), (276, 7894420), (345, 6315536), (368, 5920815), (460, 4736652), (552, 3947210), (690, 3157768), (920, 2368326), (1104, 1973605), (1380, 1578884), (1840, 1184163), (2760, 789442), (5520, 394721)]