55556540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{1997}}^1$

素因数の和:2126

約数の個数: 48

約数和(自身を含む): 126880992

約数和(自身を除く): 71324452

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 214, 260, 428, 535, 1070, 1391, 1997, 2140, 2782, 3994, 5564, 6955, 7988, 9985, 13910, 19970, 25961, 27820, 39940, 51922, 103844, 129805, 213679, 259610, 427358, 519220, 854716, 1068395, 2136790, 2777827, 4273580, 5555654, 11111308, 13889135, 27778270, 55556540]

約数ペア:

[(1, 55556540), (2, 27778270), (4, 13889135), (5, 11111308), (10, 5555654), (13, 4273580), (20, 2777827), (26, 2136790), (52, 1068395), (65, 854716), (107, 519220), (130, 427358), (214, 259610), (260, 213679), (428, 129805), (535, 103844), (1070, 51922), (1391, 39940), (1997, 27820), (2140, 25961), (2782, 19970), (3994, 13910), (5564, 9985), (6955, 7988)]