1640275

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1$

素因数の和:140

約数の個数: 36

約数和(自身を含む): 2572752

約数和(自身を除く): 932477

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 91, 103, 175, 245, 325, 455, 515, 637, 721, 1225, 1339, 2275, 2575, 3185, 3605, 5047, 6695, 9373, 15925, 18025, 25235, 33475, 46865, 65611, 126175, 234325, 328055, 1640275]

約数ペア:

[(1, 1640275), (5, 328055), (7, 234325), (13, 126175), (25, 65611), (35, 46865), (49, 33475), (65, 25235), (91, 18025), (103, 15925), (175, 9373), (245, 6695), (325, 5047), (455, 3605), (515, 3185), (637, 2575), (721, 2275), (1225, 1339)]