21475920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2081}}^1$

素因数の和:2140

約数の個数: 80

約数和(自身を含む): 68156352

約数和(自身を除く): 46680432

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 43, 48, 60, 80, 86, 120, 129, 172, 215, 240, 258, 344, 430, 516, 645, 688, 860, 1032, 1290, 1720, 2064, 2081, 2580, 3440, 4162, 5160, 6243, 8324, 10320, 10405, 12486, 16648, 20810, 24972, 31215, 33296, 41620, 49944, 62430, 83240, 89483, 99888, 124860, 166480, 178966, 249720, 268449, 357932, 447415, 499440, 536898, 715864, 894830, 1073796, 1342245, 1431728, 1789660, 2147592, 2684490, 3579320, 4295184, 5368980, 7158640, 10737960, 21475920]

約数ペア:

[(1, 21475920), (2, 10737960), (3, 7158640), (4, 5368980), (5, 4295184), (6, 3579320), (8, 2684490), (10, 2147592), (12, 1789660), (15, 1431728), (16, 1342245), (20, 1073796), (24, 894830), (30, 715864), (40, 536898), (43, 499440), (48, 447415), (60, 357932), (80, 268449), (86, 249720), (120, 178966), (129, 166480), (172, 124860), (215, 99888), (240, 89483), (258, 83240), (344, 62430), (430, 49944), (516, 41620), (645, 33296), (688, 31215), (860, 24972), (1032, 20810), (1290, 16648), (1720, 12486), (2064, 10405), (2081, 10320), (2580, 8324), (3440, 6243), (4162, 5160)]