28820967

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{607}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 49904640

約数和(自身を除く): 21083673

約数列:

[1, 3, 7, 17, 19, 21, 49, 51, 57, 119, 133, 147, 323, 357, 399, 607, 833, 931, 969, 1821, 2261, 2499, 2793, 4249, 6783, 10319, 11533, 12747, 15827, 29743, 30957, 34599, 47481, 72233, 80731, 89229, 196061, 216699, 242193, 505631, 565117, 588183, 1372427, 1516893, 1695351, 4117281, 9606989, 28820967]

約数ペア:

[(1, 28820967), (3, 9606989), (7, 4117281), (17, 1695351), (19, 1516893), (21, 1372427), (49, 588183), (51, 565117), (57, 505631), (119, 242193), (133, 216699), (147, 196061), (323, 89229), (357, 80731), (399, 72233), (607, 47481), (833, 34599), (931, 30957), (969, 29743), (1821, 15827), (2261, 12747), (2499, 11533), (2793, 10319), (4249, 6783)]