21639274

素因数分解:

$2^1\times {\mathrm{23}}^2\times {\mathrm{113}}^1\times {\mathrm{181}}^1$

素因数の和:342

約数の個数: 24

約数和(自身を含む): 34420932

約数和(自身を除く): 12781658

約数列:

[1, 2, 23, 46, 113, 181, 226, 362, 529, 1058, 2599, 4163, 5198, 8326, 20453, 40906, 59777, 95749, 119554, 191498, 470419, 940838, 10819637, 21639274]

約数ペア:

[(1, 21639274), (2, 10819637), (23, 940838), (46, 470419), (113, 191498), (181, 119554), (226, 95749), (362, 59777), (529, 40906), (1058, 20453), (2599, 8326), (4163, 5198)]