1215180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 3795792

約数和(自身を除く): 2580612

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 157, 172, 180, 215, 258, 314, 387, 430, 471, 516, 628, 645, 774, 785, 860, 942, 1290, 1413, 1548, 1570, 1884, 1935, 2355, 2580, 2826, 3140, 3870, 4710, 5652, 6751, 7065, 7740, 9420, 13502, 14130, 20253, 27004, 28260, 33755, 40506, 60759, 67510, 81012, 101265, 121518, 135020, 202530, 243036, 303795, 405060, 607590, 1215180]

約数ペア:

[(1, 1215180), (2, 607590), (3, 405060), (4, 303795), (5, 243036), (6, 202530), (9, 135020), (10, 121518), (12, 101265), (15, 81012), (18, 67510), (20, 60759), (30, 40506), (36, 33755), (43, 28260), (45, 27004), (60, 20253), (86, 14130), (90, 13502), (129, 9420), (157, 7740), (172, 7065), (180, 6751), (215, 5652), (258, 4710), (314, 3870), (387, 3140), (430, 2826), (471, 2580), (516, 2355), (628, 1935), (645, 1884), (774, 1570), (785, 1548), (860, 1413), (942, 1290)]