201526521

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:294

約数の個数: 64

約数和(自身を含む): 337182720

約数和(自身を除く): 135656199

約数列:

[1, 3, 7, 19, 21, 41, 57, 97, 123, 127, 133, 287, 291, 381, 399, 679, 779, 861, 889, 1843, 2037, 2337, 2413, 2667, 3977, 5207, 5453, 5529, 7239, 11931, 12319, 12901, 15621, 16359, 16891, 27839, 36449, 36957, 38703, 50673, 75563, 83517, 86233, 98933, 109347, 226689, 234061, 258699, 296799, 505079, 528941, 692531, 702183, 1515237, 1586823, 1638427, 2077593, 3535553, 4915281, 9596501, 10606659, 28789503, 67175507, 201526521]

約数ペア:

[(1, 201526521), (3, 67175507), (7, 28789503), (19, 10606659), (21, 9596501), (41, 4915281), (57, 3535553), (97, 2077593), (123, 1638427), (127, 1586823), (133, 1515237), (287, 702183), (291, 692531), (381, 528941), (399, 505079), (679, 296799), (779, 258699), (861, 234061), (889, 226689), (1843, 109347), (2037, 98933), (2337, 86233), (2413, 83517), (2667, 75563), (3977, 50673), (5207, 38703), (5453, 36957), (5529, 36449), (7239, 27839), (11931, 16891), (12319, 16359), (12901, 15621)]