31790440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{72251}}^1$

素因数の和:72273

約数の個数: 32

約数和(自身を含む): 78032160

約数和(自身を除く): 46241720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 72251, 144502, 289004, 361255, 578008, 722510, 794761, 1445020, 1589522, 2890040, 3179044, 3973805, 6358088, 7947610, 15895220, 31790440]

約数ペア:

[(1, 31790440), (2, 15895220), (4, 7947610), (5, 6358088), (8, 3973805), (10, 3179044), (11, 2890040), (20, 1589522), (22, 1445020), (40, 794761), (44, 722510), (55, 578008), (88, 361255), (110, 289004), (220, 144502), (440, 72251)]