123078440

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{28229}}^1$

素因数の和:28349

約数の個数: 32

約数和(自身を含む): 279477000

約数和(自身を除く): 156398560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 28229, 56458, 112916, 141145, 225832, 282290, 564580, 1129160, 3076961, 6153922, 12307844, 15384805, 24615688, 30769610, 61539220, 123078440]

約数ペア:

[(1, 123078440), (2, 61539220), (4, 30769610), (5, 24615688), (8, 15384805), (10, 12307844), (20, 6153922), (40, 3076961), (109, 1129160), (218, 564580), (436, 282290), (545, 225832), (872, 141145), (1090, 112916), (2180, 56458), (4360, 28229)]