12709960

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5209}}^1$

素因数の和:5281

約数の個数: 32

約数和(自身を含む): 29071800

約数和(自身を除く): 16361840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 5209, 10418, 20836, 26045, 41672, 52090, 104180, 208360, 317749, 635498, 1270996, 1588745, 2541992, 3177490, 6354980, 12709960]

約数ペア:

[(1, 12709960), (2, 6354980), (4, 3177490), (5, 2541992), (8, 1588745), (10, 1270996), (20, 635498), (40, 317749), (61, 208360), (122, 104180), (244, 52090), (305, 41672), (488, 26045), (610, 20836), (1220, 10418), (2440, 5209)]