20169625

素因数分解:

$5^3\times 7^2\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:155

約数の個数: 48

約数和(自身を含む): 30410640

約数和(自身を除く): 10241015

約数列:

[1, 5, 7, 25, 35, 37, 49, 89, 125, 175, 185, 245, 259, 445, 623, 875, 925, 1225, 1295, 1813, 2225, 3115, 3293, 4361, 4625, 6125, 6475, 9065, 11125, 15575, 16465, 21805, 23051, 32375, 45325, 77875, 82325, 109025, 115255, 161357, 226625, 411625, 545125, 576275, 806785, 2881375, 4033925, 20169625]

約数ペア:

[(1, 20169625), (5, 4033925), (7, 2881375), (25, 806785), (35, 576275), (37, 545125), (49, 411625), (89, 226625), (125, 161357), (175, 115255), (185, 109025), (245, 82325), (259, 77875), (445, 45325), (623, 32375), (875, 23051), (925, 21805), (1225, 16465), (1295, 15575), (1813, 11125), (2225, 9065), (3115, 6475), (3293, 6125), (4361, 4625)]