21362080

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{7027}}^1$

素因数の和:7061

約数の個数: 48

約数和(自身を含む): 53131680

約数和(自身を除く): 31769600

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 7027, 14054, 28108, 35135, 56216, 70270, 112432, 133513, 140540, 224864, 267026, 281080, 534052, 562160, 667565, 1068104, 1124320, 1335130, 2136208, 2670260, 4272416, 5340520, 10681040, 21362080]

約数ペア:

[(1, 21362080), (2, 10681040), (4, 5340520), (5, 4272416), (8, 2670260), (10, 2136208), (16, 1335130), (19, 1124320), (20, 1068104), (32, 667565), (38, 562160), (40, 534052), (76, 281080), (80, 267026), (95, 224864), (152, 140540), (160, 133513), (190, 112432), (304, 70270), (380, 56216), (608, 35135), (760, 28108), (1520, 14054), (3040, 7027)]