641437425

素因数分解:

$3^2\times 5^2\times {\mathrm{137}}^1\times {\mathrm{20809}}^1$

素因数の和:20962

約数の個数: 36

約数和(自身を含む): 1157327340

約数和(自身を除く): 515889915

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 137, 225, 411, 685, 1233, 2055, 3425, 6165, 10275, 20809, 30825, 62427, 104045, 187281, 312135, 520225, 936405, 1560675, 2850833, 4682025, 8552499, 14254165, 25657497, 42762495, 71270825, 128287485, 213812475, 641437425]

約数ペア:

[(1, 641437425), (3, 213812475), (5, 128287485), (9, 71270825), (15, 42762495), (25, 25657497), (45, 14254165), (75, 8552499), (137, 4682025), (225, 2850833), (411, 1560675), (685, 936405), (1233, 520225), (2055, 312135), (3425, 187281), (6165, 104045), (10275, 62427), (20809, 30825)]