21683975

素因数分解:

$5^2\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1$

素因数の和:371

約数の個数: 24

約数和(自身を含む): 27907440

約数和(自身を除く): 6223465

約数列:

[1, 5, 25, 59, 61, 241, 295, 305, 1205, 1475, 1525, 3599, 6025, 14219, 14701, 17995, 71095, 73505, 89975, 355475, 367525, 867359, 4336795, 21683975]

約数ペア:

[(1, 21683975), (5, 4336795), (25, 867359), (59, 367525), (61, 355475), (241, 89975), (295, 73505), (305, 71095), (1205, 17995), (1475, 14701), (1525, 14219), (3599, 6025)]