212819240

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{87221}}^1$

素因数の和:87293

約数の個数: 32

約数和(自身を含む): 486698760

約数和(自身を除く): 273879520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 87221, 174442, 348884, 436105, 697768, 872210, 1744420, 3488840, 5320481, 10640962, 21281924, 26602405, 42563848, 53204810, 106409620, 212819240]

約数ペア:

[(1, 212819240), (2, 106409620), (4, 53204810), (5, 42563848), (8, 26602405), (10, 21281924), (20, 10640962), (40, 5320481), (61, 3488840), (122, 1744420), (244, 872210), (305, 697768), (488, 436105), (610, 348884), (1220, 174442), (2440, 87221)]