17808680

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3203}}^1$

素因数の和:3353

約数の個数: 32

約数和(自身を含む): 40370400

約数和(自身を除く): 22561720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3203, 5560, 6406, 12812, 16015, 25624, 32030, 64060, 128120, 445217, 890434, 1780868, 2226085, 3561736, 4452170, 8904340, 17808680]

約数ペア:

[(1, 17808680), (2, 8904340), (4, 4452170), (5, 3561736), (8, 2226085), (10, 1780868), (20, 890434), (40, 445217), (139, 128120), (278, 64060), (556, 32030), (695, 25624), (1112, 16015), (1390, 12812), (2780, 6406), (3203, 5560)]