21838575

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{257}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 39926016

約数和(自身を除く): 18087441

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 103, 165, 257, 275, 309, 515, 771, 825, 1133, 1285, 1545, 2575, 2827, 3399, 3855, 5665, 6425, 7725, 8481, 14135, 16995, 19275, 26471, 28325, 42405, 70675, 79413, 84975, 132355, 212025, 291181, 397065, 661775, 873543, 1455905, 1985325, 4367715, 7279525, 21838575]

約数ペア:

[(1, 21838575), (3, 7279525), (5, 4367715), (11, 1985325), (15, 1455905), (25, 873543), (33, 661775), (55, 397065), (75, 291181), (103, 212025), (165, 132355), (257, 84975), (275, 79413), (309, 70675), (515, 42405), (771, 28325), (825, 26471), (1133, 19275), (1285, 16995), (1545, 14135), (2575, 8481), (2827, 7725), (3399, 6425), (3855, 5665)]