21191588

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{691}}^1$

素因数の和:764

約数の個数: 48

約数和(自身を含む): 43944768

約数和(自身を除く): 22753180

約数列:

[1, 2, 4, 11, 17, 22, 34, 41, 44, 68, 82, 164, 187, 374, 451, 691, 697, 748, 902, 1382, 1394, 1804, 2764, 2788, 7601, 7667, 11747, 15202, 15334, 23494, 28331, 30404, 30668, 46988, 56662, 113324, 129217, 258434, 311641, 481627, 516868, 623282, 963254, 1246564, 1926508, 5297897, 10595794, 21191588]

約数ペア:

[(1, 21191588), (2, 10595794), (4, 5297897), (11, 1926508), (17, 1246564), (22, 963254), (34, 623282), (41, 516868), (44, 481627), (68, 311641), (82, 258434), (164, 129217), (187, 113324), (374, 56662), (451, 46988), (691, 30668), (697, 30404), (748, 28331), (902, 23494), (1382, 15334), (1394, 15202), (1804, 11747), (2764, 7667), (2788, 7601)]