257101268481

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{751}}^1\times {\mathrm{1979}}^1$

素因数の和:2931

約数の個数: 64

約数和(自身を含む): 393085440000

約数和(自身を除く): 135984171519

約数列:

[1, 3, 9, 27, 43, 129, 149, 387, 447, 751, 1161, 1341, 1979, 2253, 4023, 5937, 6407, 6759, 17811, 19221, 20277, 32293, 53433, 57663, 85097, 96879, 111899, 172989, 255291, 290637, 294871, 335697, 765873, 871911, 884613, 1007091, 1486229, 2297619, 2653839, 3021273, 4458687, 4811657, 7961517, 12679453, 13376061, 14434971, 38038359, 40128183, 43304913, 63907847, 114115077, 129914739, 191723541, 221448121, 342345231, 575170623, 664344363, 1725511869, 1993033089, 5979099267, 9522269203, 28566807609, 85700422827, 257101268481]

約数ペア:

[(1, 257101268481), (3, 85700422827), (9, 28566807609), (27, 9522269203), (43, 5979099267), (129, 1993033089), (149, 1725511869), (387, 664344363), (447, 575170623), (751, 342345231), (1161, 221448121), (1341, 191723541), (1979, 129914739), (2253, 114115077), (4023, 63907847), (5937, 43304913), (6407, 40128183), (6759, 38038359), (17811, 14434971), (19221, 13376061), (20277, 12679453), (32293, 7961517), (53433, 4811657), (57663, 4458687), (85097, 3021273), (96879, 2653839), (111899, 2297619), (172989, 1486229), (255291, 1007091), (290637, 884613), (294871, 871911), (335697, 765873)]