661390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^2$

素因数の和:144

約数の個数: 24

約数和(自身を含む): 1274760

約数和(自身を除く): 613370

約数列:

[1, 2, 5, 10, 19, 38, 59, 95, 118, 190, 295, 590, 1121, 2242, 3481, 5605, 6962, 11210, 17405, 34810, 66139, 132278, 330695, 661390]

約数ペア:

[(1, 661390), (2, 330695), (5, 132278), (10, 66139), (19, 34810), (38, 17405), (59, 11210), (95, 6962), (118, 5605), (190, 3481), (295, 2242), (590, 1121)]