18239375

素因数分解:

$5^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{379}}^1$

素因数の和:417

約数の個数: 40

約数和(自身を含む): 28490880

約数和(自身を除く): 10251505

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 125, 175, 275, 379, 385, 625, 875, 1375, 1895, 1925, 2653, 4169, 4375, 6875, 9475, 9625, 13265, 20845, 29183, 47375, 48125, 66325, 104225, 145915, 236875, 331625, 521125, 729575, 1658125, 2605625, 3647875, 18239375]

約数ペア:

[(1, 18239375), (5, 3647875), (7, 2605625), (11, 1658125), (25, 729575), (35, 521125), (55, 331625), (77, 236875), (125, 145915), (175, 104225), (275, 66325), (379, 48125), (385, 47375), (625, 29183), (875, 20845), (1375, 13265), (1895, 9625), (1925, 9475), (2653, 6875), (4169, 4375)]