21000921908

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{419}}^1\times {\mathrm{338659}}^1$

素因数の和:339119

約数の個数: 24

約数和(自身を含む): 37835095200

約数和(自身を除く): 16834173292

約数列:

[1, 2, 4, 37, 74, 148, 419, 838, 1676, 15503, 31006, 62012, 338659, 677318, 1354636, 12530383, 25060766, 50121532, 141898121, 283796242, 567592484, 5250230477, 10500460954, 21000921908]

約数ペア:

[(1, 21000921908), (2, 10500460954), (4, 5250230477), (37, 567592484), (74, 283796242), (148, 141898121), (419, 50121532), (838, 25060766), (1676, 12530383), (15503, 1354636), (31006, 677318), (62012, 338659)]