21067600

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{1699}}^1$

素因数の和:1748

約数の個数: 60

約数和(自身を含む): 52278400

約数和(自身を除く): 31210800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1550, 1699, 2480, 3100, 3398, 6200, 6796, 8495, 12400, 13592, 16990, 27184, 33980, 42475, 52669, 67960, 84950, 105338, 135920, 169900, 210676, 263345, 339800, 421352, 526690, 679600, 842704, 1053380, 1316725, 2106760, 2633450, 4213520, 5266900, 10533800, 21067600]

約数ペア:

[(1, 21067600), (2, 10533800), (4, 5266900), (5, 4213520), (8, 2633450), (10, 2106760), (16, 1316725), (20, 1053380), (25, 842704), (31, 679600), (40, 526690), (50, 421352), (62, 339800), (80, 263345), (100, 210676), (124, 169900), (155, 135920), (200, 105338), (248, 84950), (310, 67960), (400, 52669), (496, 42475), (620, 33980), (775, 27184), (1240, 16990), (1550, 13592), (1699, 12400), (2480, 8495), (3100, 6796), (3398, 6200)]