21002872

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{7699}}^1$

素因数の和:7747

約数の個数: 32

約数和(自身を含む): 44352000

約数和(自身を除く): 23349128

約数列:

[1, 2, 4, 8, 11, 22, 31, 44, 62, 88, 124, 248, 341, 682, 1364, 2728, 7699, 15398, 30796, 61592, 84689, 169378, 238669, 338756, 477338, 677512, 954676, 1909352, 2625359, 5250718, 10501436, 21002872]

約数ペア:

[(1, 21002872), (2, 10501436), (4, 5250718), (8, 2625359), (11, 1909352), (22, 954676), (31, 677512), (44, 477338), (62, 338756), (88, 238669), (124, 169378), (248, 84689), (341, 61592), (682, 30796), (1364, 15398), (2728, 7699)]