81788580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10567}}^1$

素因数の和:10625

約数の個数: 72

約数和(自身を含む): 253885632

約数和(自身を除く): 172097052

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 3870, 7740, 10567, 21134, 31701, 42268, 52835, 63402, 95103, 105670, 126804, 158505, 190206, 211340, 317010, 380412, 454381, 475515, 634020, 908762, 951030, 1363143, 1817524, 1902060, 2271905, 2726286, 4089429, 4543810, 5452572, 6815715, 8178858, 9087620, 13631430, 16357716, 20447145, 27262860, 40894290, 81788580]

約数ペア:

[(1, 81788580), (2, 40894290), (3, 27262860), (4, 20447145), (5, 16357716), (6, 13631430), (9, 9087620), (10, 8178858), (12, 6815715), (15, 5452572), (18, 4543810), (20, 4089429), (30, 2726286), (36, 2271905), (43, 1902060), (45, 1817524), (60, 1363143), (86, 951030), (90, 908762), (129, 634020), (172, 475515), (180, 454381), (215, 380412), (258, 317010), (387, 211340), (430, 190206), (516, 158505), (645, 126804), (774, 105670), (860, 95103), (1290, 63402), (1548, 52835), (1935, 42268), (2580, 31701), (3870, 21134), (7740, 10567)]