398209215

素因数分解:

$3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{191}}^1\times {\mathrm{1061}}^1$

素因数の和:1391

約数の個数: 32

約数和(自身を含む): 645967872

約数和(自身を除く): 247758657

約数列:

[1, 3, 5, 15, 131, 191, 393, 573, 655, 955, 1061, 1965, 2865, 3183, 5305, 15915, 25021, 75063, 125105, 138991, 202651, 375315, 416973, 607953, 694955, 1013255, 2084865, 3039765, 26547281, 79641843, 132736405, 398209215]

約数ペア:

[(1, 398209215), (3, 132736405), (5, 79641843), (15, 26547281), (131, 3039765), (191, 2084865), (393, 1013255), (573, 694955), (655, 607953), (955, 416973), (1061, 375315), (1965, 202651), (2865, 138991), (3183, 125105), (5305, 75063), (15915, 25021)]