21685736

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{211}}^1\times {\mathrm{443}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 42357600

約数和(自身を除く): 20671864

約数列:

[1, 2, 4, 8, 29, 58, 116, 211, 232, 422, 443, 844, 886, 1688, 1772, 3544, 6119, 12238, 12847, 24476, 25694, 48952, 51388, 93473, 102776, 186946, 373892, 747784, 2710717, 5421434, 10842868, 21685736]

約数ペア:

[(1, 21685736), (2, 10842868), (4, 5421434), (8, 2710717), (29, 747784), (58, 373892), (116, 186946), (211, 102776), (232, 93473), (422, 51388), (443, 48952), (844, 25694), (886, 24476), (1688, 12847), (1772, 12238), (3544, 6119)]