21000585980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1307633}}^1$

素因数の和:1307726

約数の個数: 48

約数和(自身を含む): 48769517664

約数和(自身を除く): 27768931684

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 220, 292, 365, 730, 803, 1460, 1606, 3212, 4015, 8030, 16060, 1307633, 2615266, 5230532, 6538165, 13076330, 14383963, 26152660, 28767926, 57535852, 71919815, 95457209, 143839630, 190914418, 287679260, 381828836, 477286045, 954572090, 1050029299, 1909144180, 2100058598, 4200117196, 5250146495, 10500292990, 21000585980]

約数ペア:

[(1, 21000585980), (2, 10500292990), (4, 5250146495), (5, 4200117196), (10, 2100058598), (11, 1909144180), (20, 1050029299), (22, 954572090), (44, 477286045), (55, 381828836), (73, 287679260), (110, 190914418), (146, 143839630), (220, 95457209), (292, 71919815), (365, 57535852), (730, 28767926), (803, 26152660), (1460, 14383963), (1606, 13076330), (3212, 6538165), (4015, 5230532), (8030, 2615266), (16060, 1307633)]