21000687175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1373}}^1\times {\mathrm{2477}}^1$

素因数の和:3892

約数の個数: 48

約数和(自身を含む): 29553420960

約数和(自身を除く): 8552733785

約数列:

[1, 5, 13, 19, 25, 65, 95, 247, 325, 475, 1235, 1373, 2477, 6175, 6865, 12385, 17849, 26087, 32201, 34325, 47063, 61925, 89245, 130435, 161005, 235315, 339131, 446225, 611819, 652175, 805025, 1176575, 1695655, 3059095, 3400921, 8478275, 15295475, 17004605, 44211973, 64617499, 85023025, 221059865, 323087495, 840027487, 1105299325, 1615437475, 4200137435, 21000687175]

約数ペア:

[(1, 21000687175), (5, 4200137435), (13, 1615437475), (19, 1105299325), (25, 840027487), (65, 323087495), (95, 221059865), (247, 85023025), (325, 64617499), (475, 44211973), (1235, 17004605), (1373, 15295475), (2477, 8478275), (6175, 3400921), (6865, 3059095), (12385, 1695655), (17849, 1176575), (26087, 805025), (32201, 652175), (34325, 611819), (47063, 446225), (61925, 339131), (89245, 235315), (130435, 161005)]