639778902

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{727}}^1\times {\mathrm{911}}^1$

素因数の和:1673

約数の個数: 64

約数和(自身を含む): 1529708544

約数和(自身を除く): 889929642

約数列:

[1, 2, 3, 6, 7, 14, 21, 23, 42, 46, 69, 138, 161, 322, 483, 727, 911, 966, 1454, 1822, 2181, 2733, 4362, 5089, 5466, 6377, 10178, 12754, 15267, 16721, 19131, 20953, 30534, 33442, 38262, 41906, 50163, 62859, 100326, 117047, 125718, 146671, 234094, 293342, 351141, 440013, 662297, 702282, 880026, 1324594, 1986891, 3973782, 4636079, 9272158, 13908237, 15232831, 27816474, 30465662, 45698493, 91396986, 106629817, 213259634, 319889451, 639778902]

約数ペア:

[(1, 639778902), (2, 319889451), (3, 213259634), (6, 106629817), (7, 91396986), (14, 45698493), (21, 30465662), (23, 27816474), (42, 15232831), (46, 13908237), (69, 9272158), (138, 4636079), (161, 3973782), (322, 1986891), (483, 1324594), (727, 880026), (911, 702282), (966, 662297), (1454, 440013), (1822, 351141), (2181, 293342), (2733, 234094), (4362, 146671), (5089, 125718), (5466, 117047), (6377, 100326), (10178, 62859), (12754, 50163), (15267, 41906), (16721, 38262), (19131, 33442), (20953, 30534)]