20438660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1523}}^1$

素因数の和:1604

約数の個数: 48

約数和(自身を含む): 47621952

約数和(自身を除く): 27183292

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1342, 1523, 2684, 3046, 3355, 6092, 6710, 7615, 13420, 15230, 16753, 30460, 33506, 67012, 83765, 92903, 167530, 185806, 335060, 371612, 464515, 929030, 1021933, 1858060, 2043866, 4087732, 5109665, 10219330, 20438660]

約数ペア:

[(1, 20438660), (2, 10219330), (4, 5109665), (5, 4087732), (10, 2043866), (11, 1858060), (20, 1021933), (22, 929030), (44, 464515), (55, 371612), (61, 335060), (110, 185806), (122, 167530), (220, 92903), (244, 83765), (305, 67012), (610, 33506), (671, 30460), (1220, 16753), (1342, 15230), (1523, 13420), (2684, 7615), (3046, 6710), (3355, 6092)]