640845

素因数分解:

$3^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:162

約数の個数: 32

約数和(自身を含む): 1175040

約数和(自身を除く): 534195

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 101, 135, 141, 235, 303, 423, 505, 705, 909, 1269, 1515, 2115, 2727, 4545, 4747, 6345, 13635, 14241, 23735, 42723, 71205, 128169, 213615, 640845]

約数ペア:

[(1, 640845), (3, 213615), (5, 128169), (9, 71205), (15, 42723), (27, 23735), (45, 14241), (47, 13635), (101, 6345), (135, 4747), (141, 4545), (235, 2727), (303, 2115), (423, 1515), (505, 1269), (705, 909)]