21117280

素因数分解:

$2^5\times 5^1\times {\mathrm{59}}^1\times {\mathrm{2237}}^1$

素因数の和:2311

約数の個数: 48

約数和(自身を含む): 50757840

約数和(自身を除く): 29640560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 80, 118, 160, 236, 295, 472, 590, 944, 1180, 1888, 2237, 2360, 4474, 4720, 8948, 9440, 11185, 17896, 22370, 35792, 44740, 71584, 89480, 131983, 178960, 263966, 357920, 527932, 659915, 1055864, 1319830, 2111728, 2639660, 4223456, 5279320, 10558640, 21117280]

約数ペア:

[(1, 21117280), (2, 10558640), (4, 5279320), (5, 4223456), (8, 2639660), (10, 2111728), (16, 1319830), (20, 1055864), (32, 659915), (40, 527932), (59, 357920), (80, 263966), (118, 178960), (160, 131983), (236, 89480), (295, 71584), (472, 44740), (590, 35792), (944, 22370), (1180, 17896), (1888, 11185), (2237, 9440), (2360, 8948), (4474, 4720)]