72640325

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 101481600

約数和(自身を除く): 28841275

約数列:

[1, 5, 19, 23, 25, 61, 95, 109, 115, 305, 437, 475, 545, 575, 1159, 1403, 1525, 2071, 2185, 2507, 2725, 5795, 6649, 7015, 10355, 10925, 12535, 26657, 28975, 33245, 35075, 47633, 51775, 62675, 126331, 133285, 152927, 166225, 238165, 631655, 666425, 764635, 1190825, 2905613, 3158275, 3823175, 14528065, 72640325]

約数ペア:

[(1, 72640325), (5, 14528065), (19, 3823175), (23, 3158275), (25, 2905613), (61, 1190825), (95, 764635), (109, 666425), (115, 631655), (305, 238165), (437, 166225), (475, 152927), (545, 133285), (575, 126331), (1159, 62675), (1403, 51775), (1525, 47633), (2071, 35075), (2185, 33245), (2507, 28975), (2725, 26657), (5795, 12535), (6649, 10925), (7015, 10355)]