256331385

素因数分解:

$3^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:460

約数の個数: 80

約数和(自身を含む): 482993280

約数和(自身を除く): 226661895

約数列:

[1, 3, 5, 9, 15, 27, 41, 43, 45, 81, 123, 129, 135, 205, 215, 359, 369, 387, 405, 615, 645, 1077, 1107, 1161, 1763, 1795, 1845, 1935, 3231, 3321, 3483, 5289, 5385, 5535, 5805, 8815, 9693, 14719, 15437, 15867, 16155, 16605, 17415, 26445, 29079, 44157, 46311, 47601, 48465, 73595, 77185, 79335, 132471, 138933, 142803, 145395, 220785, 231555, 238005, 397413, 416799, 632917, 662355, 694665, 714015, 1192239, 1250397, 1898751, 1987065, 2083995, 3164585, 5696253, 5961195, 6251985, 9493755, 17088759, 28481265, 51266277, 85443795, 256331385]

約数ペア:

[(1, 256331385), (3, 85443795), (5, 51266277), (9, 28481265), (15, 17088759), (27, 9493755), (41, 6251985), (43, 5961195), (45, 5696253), (81, 3164585), (123, 2083995), (129, 1987065), (135, 1898751), (205, 1250397), (215, 1192239), (359, 714015), (369, 694665), (387, 662355), (405, 632917), (615, 416799), (645, 397413), (1077, 238005), (1107, 231555), (1161, 220785), (1763, 145395), (1795, 142803), (1845, 138933), (1935, 132471), (3231, 79335), (3321, 77185), (3483, 73595), (5289, 48465), (5385, 47601), (5535, 46311), (5805, 44157), (8815, 29079), (9693, 26445), (14719, 17415), (15437, 16605), (15867, 16155)]