28141780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{761}}^1$

素因数の和:856

約数の個数: 36

約数和(自身を含む): 60583572

約数和(自身を除く): 32441792

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 761, 860, 1522, 1849, 3044, 3698, 3805, 7396, 7610, 9245, 15220, 18490, 32723, 36980, 65446, 130892, 163615, 327230, 654460, 1407089, 2814178, 5628356, 7035445, 14070890, 28141780]

約数ペア:

[(1, 28141780), (2, 14070890), (4, 7035445), (5, 5628356), (10, 2814178), (20, 1407089), (43, 654460), (86, 327230), (172, 163615), (215, 130892), (430, 65446), (761, 36980), (860, 32723), (1522, 18490), (1849, 15220), (3044, 9245), (3698, 7610), (3805, 7396)]