16840780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{6959}}^1$

素因数の和:6990

約数の個数: 36

約数和(自身を含む): 38878560

約数和(自身を除く): 22037780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 6959, 13918, 27836, 34795, 69590, 76549, 139180, 153098, 306196, 382745, 765490, 842039, 1530980, 1684078, 3368156, 4210195, 8420390, 16840780]

約数ペア:

[(1, 16840780), (2, 8420390), (4, 4210195), (5, 3368156), (10, 1684078), (11, 1530980), (20, 842039), (22, 765490), (44, 382745), (55, 306196), (110, 153098), (121, 139180), (220, 76549), (242, 69590), (484, 34795), (605, 27836), (1210, 13918), (2420, 6959)]