780275890

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1\times {\mathrm{211}}^1$

素因数の和:479

約数の個数: 64

約数和(自身を含む): 1484881920

約数和(自身を除く): 704606030

約数列:

[1, 2, 5, 10, 31, 62, 79, 151, 155, 158, 211, 302, 310, 395, 422, 755, 790, 1055, 1510, 2110, 2449, 4681, 4898, 6541, 9362, 11929, 12245, 13082, 16669, 23405, 23858, 24490, 31861, 32705, 33338, 46810, 59645, 63722, 65410, 83345, 119290, 159305, 166690, 318610, 369799, 516739, 739598, 987691, 1033478, 1848995, 1975382, 2517019, 2583695, 3697990, 4938455, 5034038, 5167390, 9876910, 12585095, 25170190, 78027589, 156055178, 390137945, 780275890]

約数ペア:

[(1, 780275890), (2, 390137945), (5, 156055178), (10, 78027589), (31, 25170190), (62, 12585095), (79, 9876910), (151, 5167390), (155, 5034038), (158, 4938455), (211, 3697990), (302, 2583695), (310, 2517019), (395, 1975382), (422, 1848995), (755, 1033478), (790, 987691), (1055, 739598), (1510, 516739), (2110, 369799), (2449, 318610), (4681, 166690), (4898, 159305), (6541, 119290), (9362, 83345), (11929, 65410), (12245, 63722), (13082, 59645), (16669, 46810), (23405, 33338), (23858, 32705), (24490, 31861)]