19801454

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{1607}}^1$

素因数の和:1771

約数の個数: 16

約数和(自身を含む): 30506976

約数和(自身を除く): 10705522

約数列:

[1, 2, 61, 101, 122, 202, 1607, 3214, 6161, 12322, 98027, 162307, 196054, 324614, 9900727, 19801454]

約数ペア:

[(1, 19801454), (2, 9900727), (61, 324614), (101, 196054), (122, 162307), (202, 98027), (1607, 12322), (3214, 6161)]