21471051

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{439}}^1$

素因数の和:603

約数の個数: 32

約数和(自身を含む): 34974720

約数和(自身を除く): 13503669

約数列:

[1, 3, 7, 17, 21, 51, 119, 137, 357, 411, 439, 959, 1317, 2329, 2877, 3073, 6987, 7463, 9219, 16303, 22389, 48909, 52241, 60143, 156723, 180429, 421001, 1022431, 1263003, 3067293, 7157017, 21471051]

約数ペア:

[(1, 21471051), (3, 7157017), (7, 3067293), (17, 1263003), (21, 1022431), (51, 421001), (119, 180429), (137, 156723), (357, 60143), (411, 52241), (439, 48909), (959, 22389), (1317, 16303), (2329, 9219), (2877, 7463), (3073, 6987)]