21356038

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{2689}}^1$

素因数の和:2740

約数の個数: 24

約数和(自身を含む): 36896040

約数和(自身を除く): 15540002

約数列:

[1, 2, 11, 19, 22, 38, 209, 361, 418, 722, 2689, 3971, 5378, 7942, 29579, 51091, 59158, 102182, 562001, 970729, 1124002, 1941458, 10678019, 21356038]

約数ペア:

[(1, 21356038), (2, 10678019), (11, 1941458), (19, 1124002), (22, 970729), (38, 562001), (209, 102182), (361, 59158), (418, 51091), (722, 29579), (2689, 7942), (3971, 5378)]