21129124784

素因数分解:

$2^4\times {\mathrm{1831}}^1\times {\mathrm{721229}}^1$

素因数の和:723068

約数の個数: 20

約数和(自身を含む): 40960094160

約数和(自身を除く): 19830969376

約数列:

[1, 2, 4, 8, 16, 1831, 3662, 7324, 14648, 29296, 721229, 1442458, 2884916, 5769832, 11539664, 1320570299, 2641140598, 5282281196, 10564562392, 21129124784]

約数ペア:

[(1, 21129124784), (2, 10564562392), (4, 5282281196), (8, 2641140598), (16, 1320570299), (1831, 11539664), (3662, 5769832), (7324, 2884916), (14648, 1442458), (29296, 721229)]