21561944

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{313}}^1$

素因数の和:507

約数の個数: 32

約数和(自身を含む): 41448000

約数和(自身を除く): 19886056

約数列:

[1, 2, 4, 8, 79, 109, 158, 218, 313, 316, 436, 626, 632, 872, 1252, 2504, 8611, 17222, 24727, 34117, 34444, 49454, 68234, 68888, 98908, 136468, 197816, 272936, 2695243, 5390486, 10780972, 21561944]

約数ペア:

[(1, 21561944), (2, 10780972), (4, 5390486), (8, 2695243), (79, 272936), (109, 197816), (158, 136468), (218, 98908), (313, 68888), (316, 68234), (436, 49454), (626, 34444), (632, 34117), (872, 24727), (1252, 17222), (2504, 8611)]