21278640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{88661}}^1$

素因数の和:88677

約数の個数: 40

約数和(自身を含む): 65964528

約数和(自身を除く): 44685888

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 88661, 177322, 265983, 354644, 443305, 531966, 709288, 886610, 1063932, 1329915, 1418576, 1773220, 2127864, 2659830, 3546440, 4255728, 5319660, 7092880, 10639320, 21278640]

約数ペア:

[(1, 21278640), (2, 10639320), (3, 7092880), (4, 5319660), (5, 4255728), (6, 3546440), (8, 2659830), (10, 2127864), (12, 1773220), (15, 1418576), (16, 1329915), (20, 1063932), (24, 886610), (30, 709288), (40, 531966), (48, 443305), (60, 354644), (80, 265983), (120, 177322), (240, 88661)]