209969975

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{15937}}^1$

素因数の和:15995

約数の個数: 24

約数和(自身を含む): 284588928

約数和(自身を除く): 74618953

約数列:

[1, 5, 17, 25, 31, 85, 155, 425, 527, 775, 2635, 13175, 15937, 79685, 270929, 398425, 494047, 1354645, 2470235, 6773225, 8398799, 12351175, 41993995, 209969975]

約数ペア:

[(1, 209969975), (5, 41993995), (17, 12351175), (25, 8398799), (31, 6773225), (85, 2470235), (155, 1354645), (425, 494047), (527, 398425), (775, 270929), (2635, 79685), (13175, 15937)]