25172721

素因数分解:

$3^3\times 7^2\times {\mathrm{53}}^1\times {\mathrm{359}}^1$

素因数の和:435

約数の個数: 48

約数和(自身を含む): 44323200

約数和(自身を除く): 19150479

約数列:

[1, 3, 7, 9, 21, 27, 49, 53, 63, 147, 159, 189, 359, 371, 441, 477, 1077, 1113, 1323, 1431, 2513, 2597, 3231, 3339, 7539, 7791, 9693, 10017, 17591, 19027, 22617, 23373, 52773, 57081, 67851, 70119, 133189, 158319, 171243, 399567, 474957, 513729, 932323, 1198701, 2796969, 3596103, 8390907, 25172721]

約数ペア:

[(1, 25172721), (3, 8390907), (7, 3596103), (9, 2796969), (21, 1198701), (27, 932323), (49, 513729), (53, 474957), (63, 399567), (147, 171243), (159, 158319), (189, 133189), (359, 70119), (371, 67851), (441, 57081), (477, 52773), (1077, 23373), (1113, 22617), (1323, 19027), (1431, 17591), (2513, 10017), (2597, 9693), (3231, 7791), (3339, 7539)]