15721872681921

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{331119241}}^1$

素因数の和:331119294

約数の個数: 48

約数和(自身を含む): 27178267383360

約数和(自身を除く): 11456394701439

約数列:

[1, 3, 7, 17, 19, 21, 49, 51, 57, 119, 133, 147, 323, 357, 399, 833, 931, 969, 2261, 2499, 2793, 6783, 15827, 47481, 331119241, 993357723, 2317834687, 5629027097, 6291265579, 6953504061, 16224842809, 16887081291, 18873796737, 39403189679, 44038859053, 48674528427, 106951514843, 118209569037, 132116577159, 275822327753, 308272013371, 320854544529, 748660603901, 827466983259, 924816040113, 2245981811703, 5240624227307, 15721872681921]

約数ペア:

[(1, 15721872681921), (3, 5240624227307), (7, 2245981811703), (17, 924816040113), (19, 827466983259), (21, 748660603901), (49, 320854544529), (51, 308272013371), (57, 275822327753), (119, 132116577159), (133, 118209569037), (147, 106951514843), (323, 48674528427), (357, 44038859053), (399, 39403189679), (833, 18873796737), (931, 16887081291), (969, 16224842809), (2261, 6953504061), (2499, 6291265579), (2793, 5629027097), (6783, 2317834687), (15827, 993357723), (47481, 331119241)]