21711680

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3571}}^1$

素因数の和:3607

約数の個数: 56

約数和(自身を含む): 54437280

約数和(自身を除く): 32725600

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 3571, 6080, 7142, 14284, 17855, 28568, 35710, 57136, 67849, 71420, 114272, 135698, 142840, 228544, 271396, 285680, 339245, 542792, 571360, 678490, 1085584, 1142720, 1356980, 2171168, 2713960, 4342336, 5427920, 10855840, 21711680]

約数ペア:

[(1, 21711680), (2, 10855840), (4, 5427920), (5, 4342336), (8, 2713960), (10, 2171168), (16, 1356980), (19, 1142720), (20, 1085584), (32, 678490), (38, 571360), (40, 542792), (64, 339245), (76, 285680), (80, 271396), (95, 228544), (152, 142840), (160, 135698), (190, 114272), (304, 71420), (320, 67849), (380, 57136), (608, 35710), (760, 28568), (1216, 17855), (1520, 14284), (3040, 7142), (3571, 6080)]