21259422

素因数分解:

$2^1\times 3^4\times {\mathrm{131231}}^1$

素因数の和:131245

約数の個数: 20

約数和(自身を含む): 47637216

約数和(自身を除く): 26377794

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 131231, 262462, 393693, 787386, 1181079, 2362158, 3543237, 7086474, 10629711, 21259422]

約数ペア:

[(1, 21259422), (2, 10629711), (3, 7086474), (6, 3543237), (9, 2362158), (18, 1181079), (27, 787386), (54, 393693), (81, 262462), (162, 131231)]