28326980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{389}}^1$

素因数の和:740

約数の個数: 48

約数和(自身を含む): 65257920

約数和(自身を除く): 36930940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 331, 389, 662, 778, 1324, 1556, 1655, 1945, 3310, 3641, 3890, 4279, 6620, 7282, 7780, 8558, 14564, 17116, 18205, 21395, 36410, 42790, 72820, 85580, 128759, 257518, 515036, 643795, 1287590, 1416349, 2575180, 2832698, 5665396, 7081745, 14163490, 28326980]

約数ペア:

[(1, 28326980), (2, 14163490), (4, 7081745), (5, 5665396), (10, 2832698), (11, 2575180), (20, 1416349), (22, 1287590), (44, 643795), (55, 515036), (110, 257518), (220, 128759), (331, 85580), (389, 72820), (662, 42790), (778, 36410), (1324, 21395), (1556, 18205), (1655, 17116), (1945, 14564), (3310, 8558), (3641, 7780), (3890, 7282), (4279, 6620)]