21427575

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21977}}^1$

素因数の和:22003

約数の個数: 24

約数和(自身を含む): 38153808

約数和(自身を除く): 16726233

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 21977, 65931, 109885, 285701, 329655, 549425, 857103, 1428505, 1648275, 4285515, 7142525, 21427575]

約数ペア:

[(1, 21427575), (3, 7142525), (5, 4285515), (13, 1648275), (15, 1428505), (25, 857103), (39, 549425), (65, 329655), (75, 285701), (195, 109885), (325, 65931), (975, 21977)]