28237475

素因数分解:

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

素因数の和:157

約数の個数: 48

約数和(自身を含む): 42408000

約数和(自身を除く): 14170525

約数列:

[1, 5, 7, 25, 35, 37, 49, 89, 175, 185, 245, 259, 343, 445, 623, 925, 1225, 1295, 1715, 1813, 2225, 3115, 3293, 4361, 6475, 8575, 9065, 12691, 15575, 16465, 21805, 23051, 30527, 45325, 63455, 82325, 109025, 115255, 152635, 161357, 317275, 576275, 763175, 806785, 1129499, 4033925, 5647495, 28237475]

約数ペア:

[(1, 28237475), (5, 5647495), (7, 4033925), (25, 1129499), (35, 806785), (37, 763175), (49, 576275), (89, 317275), (175, 161357), (185, 152635), (245, 115255), (259, 109025), (343, 82325), (445, 63455), (623, 45325), (925, 30527), (1225, 23051), (1295, 21805), (1715, 16465), (1813, 15575), (2225, 12691), (3115, 9065), (3293, 8575), (4361, 6475)]