81690540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{31663}}^1$

素因数の和:31718

約数の個数: 48

約数和(自身を含む): 234060288

約数和(自身を除く): 152369748

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 31663, 63326, 94989, 126652, 158315, 189978, 316630, 379956, 474945, 633260, 949890, 1361509, 1899780, 2723018, 4084527, 5446036, 6807545, 8169054, 13615090, 16338108, 20422635, 27230180, 40845270, 81690540]

約数ペア:

[(1, 81690540), (2, 40845270), (3, 27230180), (4, 20422635), (5, 16338108), (6, 13615090), (10, 8169054), (12, 6807545), (15, 5446036), (20, 4084527), (30, 2723018), (43, 1899780), (60, 1361509), (86, 949890), (129, 633260), (172, 474945), (215, 379956), (258, 316630), (430, 189978), (516, 158315), (645, 126652), (860, 94989), (1290, 63326), (2580, 31663)]