9980740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6481}}^1$

素因数の和:6508

約数の個数: 48

約数和(自身を含む): 26135424

約数和(自身を除く): 16154684

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 6481, 12962, 25924, 32405, 45367, 64810, 71291, 90734, 129620, 142582, 181468, 226835, 285164, 356455, 453670, 499037, 712910, 907340, 998074, 1425820, 1996148, 2495185, 4990370, 9980740]

約数ペア:

[(1, 9980740), (2, 4990370), (4, 2495185), (5, 1996148), (7, 1425820), (10, 998074), (11, 907340), (14, 712910), (20, 499037), (22, 453670), (28, 356455), (35, 285164), (44, 226835), (55, 181468), (70, 142582), (77, 129620), (110, 90734), (140, 71291), (154, 64810), (220, 45367), (308, 32405), (385, 25924), (770, 12962), (1540, 6481)]