312090440

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{109891}}^1$

素因数の和:109973

約数の個数: 32

約数和(自身を含む): 712100160

約数和(自身を除く): 400009720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 109891, 219782, 439564, 549455, 879128, 1098910, 2197820, 4395640, 7802261, 15604522, 31209044, 39011305, 62418088, 78022610, 156045220, 312090440]

約数ペア:

[(1, 312090440), (2, 156045220), (4, 78022610), (5, 62418088), (8, 39011305), (10, 31209044), (20, 15604522), (40, 7802261), (71, 4395640), (142, 2197820), (284, 1098910), (355, 879128), (568, 549455), (710, 439564), (1420, 219782), (2840, 109891)]