81516060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3457}}^1$

素因数の和:3603

約数の個数: 72

約数和(自身を含む): 249224976

約数和(自身を除く): 167708916

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 131, 180, 262, 393, 524, 655, 786, 1179, 1310, 1572, 1965, 2358, 2620, 3457, 3930, 4716, 5895, 6914, 7860, 10371, 11790, 13828, 17285, 20742, 23580, 31113, 34570, 41484, 51855, 62226, 69140, 103710, 124452, 155565, 207420, 311130, 452867, 622260, 905734, 1358601, 1811468, 2264335, 2717202, 4075803, 4528670, 5434404, 6793005, 8151606, 9057340, 13586010, 16303212, 20379015, 27172020, 40758030, 81516060]

約数ペア:

[(1, 81516060), (2, 40758030), (3, 27172020), (4, 20379015), (5, 16303212), (6, 13586010), (9, 9057340), (10, 8151606), (12, 6793005), (15, 5434404), (18, 4528670), (20, 4075803), (30, 2717202), (36, 2264335), (45, 1811468), (60, 1358601), (90, 905734), (131, 622260), (180, 452867), (262, 311130), (393, 207420), (524, 155565), (655, 124452), (786, 103710), (1179, 69140), (1310, 62226), (1572, 51855), (1965, 41484), (2358, 34570), (2620, 31113), (3457, 23580), (3930, 20742), (4716, 17285), (5895, 13828), (6914, 11790), (7860, 10371)]