21761180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4201}}^1$

素因数の和:4254

約数の個数: 48

約数和(自身を含む): 53651136

約数和(自身を除く): 31889956

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 4201, 5180, 8402, 16804, 21005, 29407, 42010, 58814, 84020, 117628, 147035, 155437, 294070, 310874, 588140, 621748, 777185, 1088059, 1554370, 2176118, 3108740, 4352236, 5440295, 10880590, 21761180]

約数ペア:

[(1, 21761180), (2, 10880590), (4, 5440295), (5, 4352236), (7, 3108740), (10, 2176118), (14, 1554370), (20, 1088059), (28, 777185), (35, 621748), (37, 588140), (70, 310874), (74, 294070), (140, 155437), (148, 147035), (185, 117628), (259, 84020), (370, 58814), (518, 42010), (740, 29407), (1036, 21005), (1295, 16804), (2590, 8402), (4201, 5180)]