81413745

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{257}}^1\times {\mathrm{431}}^1$

素因数の和:710

約数の個数: 48

約数和(自身を含む): 152471808

約数和(自身を除く): 71058063

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 257, 431, 735, 771, 1285, 1293, 1799, 2155, 3017, 3855, 5397, 6465, 8995, 9051, 12593, 15085, 21119, 26985, 37779, 45255, 62965, 63357, 105595, 110767, 188895, 316785, 332301, 553835, 775369, 1661505, 2326107, 3876845, 5427583, 11630535, 16282749, 27137915, 81413745]

約数ペア:

[(1, 81413745), (3, 27137915), (5, 16282749), (7, 11630535), (15, 5427583), (21, 3876845), (35, 2326107), (49, 1661505), (105, 775369), (147, 553835), (245, 332301), (257, 316785), (431, 188895), (735, 110767), (771, 105595), (1285, 63357), (1293, 62965), (1799, 45255), (2155, 37779), (3017, 26985), (3855, 21119), (5397, 15085), (6465, 12593), (8995, 9051)]