19986438

素因数分解:

$2^1\times 3^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1\times {\mathrm{457}}^1$

素因数の和:696

約数の個数: 32

約数和(自身を含む): 41351904

約数和(自身を除く): 21365466

約数列:

[1, 2, 3, 6, 37, 74, 111, 197, 222, 394, 457, 591, 914, 1182, 1371, 2742, 7289, 14578, 16909, 21867, 33818, 43734, 50727, 90029, 101454, 180058, 270087, 540174, 3331073, 6662146, 9993219, 19986438]

約数ペア:

[(1, 19986438), (2, 9993219), (3, 6662146), (6, 3331073), (37, 540174), (74, 270087), (111, 180058), (197, 101454), (222, 90029), (394, 50727), (457, 43734), (591, 33818), (914, 21867), (1182, 16909), (1371, 14578), (2742, 7289)]