19715504

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{39749}}^1$

素因数の和:39788

約数の個数: 20

約数和(自身を含む): 39432000

約数和(自身を除く): 19716496

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 39749, 79498, 158996, 317992, 635984, 1232219, 2464438, 4928876, 9857752, 19715504]

約数ペア:

[(1, 19715504), (2, 9857752), (4, 4928876), (8, 2464438), (16, 1232219), (31, 635984), (62, 317992), (124, 158996), (248, 79498), (496, 39749)]