28865991

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 51609600

約数和(自身を除く): 22743609

約数列:

[1, 3, 7, 11, 21, 29, 31, 33, 77, 87, 93, 139, 203, 217, 231, 319, 341, 417, 609, 651, 899, 957, 973, 1023, 1529, 2233, 2387, 2697, 2919, 4031, 4309, 4587, 6293, 6699, 7161, 9889, 10703, 12093, 12927, 18879, 28217, 29667, 30163, 32109, 44341, 47399, 69223, 84651, 90489, 124961, 133023, 142197, 207669, 310387, 331793, 374883, 874727, 931161, 995379, 1374571, 2624181, 4123713, 9621997, 28865991]

約数ペア:

[(1, 28865991), (3, 9621997), (7, 4123713), (11, 2624181), (21, 1374571), (29, 995379), (31, 931161), (33, 874727), (77, 374883), (87, 331793), (93, 310387), (139, 207669), (203, 142197), (217, 133023), (231, 124961), (319, 90489), (341, 84651), (417, 69223), (609, 47399), (651, 44341), (899, 32109), (957, 30163), (973, 29667), (1023, 28217), (1529, 18879), (2233, 12927), (2387, 12093), (2697, 10703), (2919, 9889), (4031, 7161), (4309, 6699), (4587, 6293)]