21638175

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{22193}}^1$

素因数の和:22219

約数の個数: 24

約数和(自身を含む): 38528784

約数和(自身を除く): 16890609

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 22193, 66579, 110965, 288509, 332895, 554825, 865527, 1442545, 1664475, 4327635, 7212725, 21638175]

約数ペア:

[(1, 21638175), (3, 7212725), (5, 4327635), (13, 1664475), (15, 1442545), (25, 865527), (39, 554825), (65, 332895), (75, 288509), (195, 110965), (325, 66579), (975, 22193)]