28735819

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1\times {\mathrm{389}}^1$

素因数の和:630

約数の個数: 16

約数和(自身を含む): 33658560

約数和(自身を除く): 4922741

約数列:

[1, 7, 61, 173, 389, 427, 1211, 2723, 10553, 23729, 67297, 73871, 166103, 471079, 4105117, 28735819]

約数ペア:

[(1, 28735819), (7, 4105117), (61, 471079), (173, 166103), (389, 73871), (427, 67297), (1211, 23729), (2723, 10553)]