19986152

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{659}}^1$

素因数の和:905

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 19930648

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 223, 446, 659, 892, 1318, 1784, 2636, 3791, 5272, 7582, 11203, 15164, 22406, 30328, 44812, 89624, 146957, 293914, 587828, 1175656, 2498269, 4996538, 9993076, 19986152]

約数ペア:

[(1, 19986152), (2, 9993076), (4, 4996538), (8, 2498269), (17, 1175656), (34, 587828), (68, 293914), (136, 146957), (223, 89624), (446, 44812), (659, 30328), (892, 22406), (1318, 15164), (1784, 11203), (2636, 7582), (3791, 5272)]