31121480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{617}}^1$

素因数の和:738

約数の個数: 64

約数和(自身を含む): 76310640

約数和(自身を除く): 45189160

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 97, 104, 130, 194, 260, 388, 485, 520, 617, 776, 970, 1234, 1261, 1940, 2468, 2522, 3085, 3880, 4936, 5044, 6170, 6305, 8021, 10088, 12340, 12610, 16042, 24680, 25220, 32084, 40105, 50440, 59849, 64168, 80210, 119698, 160420, 239396, 299245, 320840, 478792, 598490, 778037, 1196980, 1556074, 2393960, 3112148, 3890185, 6224296, 7780370, 15560740, 31121480]

約数ペア:

[(1, 31121480), (2, 15560740), (4, 7780370), (5, 6224296), (8, 3890185), (10, 3112148), (13, 2393960), (20, 1556074), (26, 1196980), (40, 778037), (52, 598490), (65, 478792), (97, 320840), (104, 299245), (130, 239396), (194, 160420), (260, 119698), (388, 80210), (485, 64168), (520, 59849), (617, 50440), (776, 40105), (970, 32084), (1234, 25220), (1261, 24680), (1940, 16042), (2468, 12610), (2522, 12340), (3085, 10088), (3880, 8021), (4936, 6305), (5044, 6170)]