21000638898

素因数分解:

$2^1\times 3^2\times {\mathrm{29}}^1\times {\mathrm{239}}^1\times {\mathrm{168331}}^1$

素因数の和:168607

約数の個数: 48

約数和(自身を含む): 47267625600

約数和(自身を除く): 26266986702

約数列:

[1, 2, 3, 6, 9, 18, 29, 58, 87, 174, 239, 261, 478, 522, 717, 1434, 2151, 4302, 6931, 13862, 20793, 41586, 62379, 124758, 168331, 336662, 504993, 1009986, 1514979, 3029958, 4881599, 9763198, 14644797, 29289594, 40231109, 43934391, 80462218, 87868782, 120693327, 241386654, 362079981, 724159962, 1166702161, 2333404322, 3500106483, 7000212966, 10500319449, 21000638898]

約数ペア:

[(1, 21000638898), (2, 10500319449), (3, 7000212966), (6, 3500106483), (9, 2333404322), (18, 1166702161), (29, 724159962), (58, 362079981), (87, 241386654), (174, 120693327), (239, 87868782), (261, 80462218), (478, 43934391), (522, 40231109), (717, 29289594), (1434, 14644797), (2151, 9763198), (4302, 4881599), (6931, 3029958), (13862, 1514979), (20793, 1009986), (41586, 504993), (62379, 336662), (124758, 168331)]