81311805

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{331}}^1$

素因数の和:498

約数の個数: 48

約数和(自身を含む): 145431936

約数和(自身を除く): 64120131

約数列:

[1, 3, 5, 9, 15, 45, 53, 103, 159, 265, 309, 331, 477, 515, 795, 927, 993, 1545, 1655, 2385, 2979, 4635, 4965, 5459, 14895, 16377, 17543, 27295, 34093, 49131, 52629, 81885, 87715, 102279, 157887, 170465, 245655, 263145, 306837, 511395, 789435, 1534185, 1806929, 5420787, 9034645, 16262361, 27103935, 81311805]

約数ペア:

[(1, 81311805), (3, 27103935), (5, 16262361), (9, 9034645), (15, 5420787), (45, 1806929), (53, 1534185), (103, 789435), (159, 511395), (265, 306837), (309, 263145), (331, 245655), (477, 170465), (515, 157887), (795, 102279), (927, 87715), (993, 81885), (1545, 52629), (1655, 49131), (2385, 34093), (2979, 27295), (4635, 17543), (4965, 16377), (5459, 14895)]