278398250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{85661}}^1$

素因数の和:85691

約数の個数: 32

約数和(自身を含む): 561257424

約数和(自身を除く): 282859174

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 85661, 171322, 428305, 856610, 1113593, 2141525, 2227186, 4283050, 5567965, 10707625, 11135930, 21415250, 27839825, 55679650, 139199125, 278398250]

約数ペア:

[(1, 278398250), (2, 139199125), (5, 55679650), (10, 27839825), (13, 21415250), (25, 11135930), (26, 10707625), (50, 5567965), (65, 4283050), (125, 2227186), (130, 2141525), (250, 1113593), (325, 856610), (650, 428305), (1625, 171322), (3250, 85661)]