19978270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{677}}^1$

素因数の和:924

約数の個数: 32

約数和(自身を含む): 38955168

約数和(自身を除く): 18976898

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 227, 454, 677, 1135, 1354, 2270, 2951, 3385, 5902, 6770, 8801, 14755, 17602, 29510, 44005, 88010, 153679, 307358, 768395, 1536790, 1997827, 3995654, 9989135, 19978270]

約数ペア:

[(1, 19978270), (2, 9989135), (5, 3995654), (10, 1997827), (13, 1536790), (26, 768395), (65, 307358), (130, 153679), (227, 88010), (454, 44005), (677, 29510), (1135, 17602), (1354, 14755), (2270, 8801), (2951, 6770), (3385, 5902)]