31307720

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{8069}}^1$

素因数の和:8177

約数の個数: 32

約数和(自身を含む): 71177400

約数和(自身を除く): 39869680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 8069, 16138, 32276, 40345, 64552, 80690, 161380, 322760, 782693, 1565386, 3130772, 3913465, 6261544, 7826930, 15653860, 31307720]

約数ペア:

[(1, 31307720), (2, 15653860), (4, 7826930), (5, 6261544), (8, 3913465), (10, 3130772), (20, 1565386), (40, 782693), (97, 322760), (194, 161380), (388, 80690), (485, 64552), (776, 40345), (970, 32276), (1940, 16138), (3880, 8069)]