30190820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1259}}^1$

素因数の和:1388

約数の個数: 48

約数和(自身を含む): 69854400

約数和(自身を除く): 39663580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 1090, 1199, 1259, 2180, 2398, 2518, 4796, 5036, 5995, 6295, 11990, 12590, 13849, 23980, 25180, 27698, 55396, 69245, 137231, 138490, 274462, 276980, 548924, 686155, 1372310, 1509541, 2744620, 3019082, 6038164, 7547705, 15095410, 30190820]

約数ペア:

[(1, 30190820), (2, 15095410), (4, 7547705), (5, 6038164), (10, 3019082), (11, 2744620), (20, 1509541), (22, 1372310), (44, 686155), (55, 548924), (109, 276980), (110, 274462), (218, 138490), (220, 137231), (436, 69245), (545, 55396), (1090, 27698), (1199, 25180), (1259, 23980), (2180, 13849), (2398, 12590), (2518, 11990), (4796, 6295), (5036, 5995)]