28742763

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 19520277

約数列:

[1, 3, 7, 19, 21, 41, 49, 57, 123, 133, 147, 251, 287, 399, 753, 779, 861, 931, 1757, 2009, 2337, 2793, 4769, 5271, 5453, 6027, 10291, 12299, 14307, 16359, 30873, 33383, 36897, 38171, 72037, 100149, 114513, 195529, 216111, 233681, 504259, 586587, 701043, 1368703, 1512777, 4106109, 9580921, 28742763]

約数ペア:

[(1, 28742763), (3, 9580921), (7, 4106109), (19, 1512777), (21, 1368703), (41, 701043), (49, 586587), (57, 504259), (123, 233681), (133, 216111), (147, 195529), (251, 114513), (287, 100149), (399, 72037), (753, 38171), (779, 36897), (861, 33383), (931, 30873), (1757, 16359), (2009, 14307), (2337, 12299), (2793, 10291), (4769, 6027), (5271, 5453)]