19784345

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{811}}^1$

素因数の和:881

約数の個数: 32

約数和(自身を含む): 29465856

約数和(自身を除く): 9681511

約数列:

[1, 5, 7, 17, 35, 41, 85, 119, 205, 287, 595, 697, 811, 1435, 3485, 4055, 4879, 5677, 13787, 24395, 28385, 33251, 68935, 96509, 166255, 232757, 482545, 565267, 1163785, 2826335, 3956869, 19784345]

約数ペア:

[(1, 19784345), (5, 3956869), (7, 2826335), (17, 1163785), (35, 565267), (41, 482545), (85, 232757), (119, 166255), (205, 96509), (287, 68935), (595, 33251), (697, 28385), (811, 24395), (1435, 13787), (3485, 5677), (4055, 4879)]