21078239784

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{42953}}^1$

素因数の和:43119

約数の個数: 128

約数和(自身を含む): 63338250240

約数和(自身を除く): 42260010456

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 23, 24, 28, 42, 46, 56, 69, 84, 92, 127, 138, 161, 168, 184, 254, 276, 322, 381, 483, 508, 552, 644, 762, 889, 966, 1016, 1288, 1524, 1778, 1932, 2667, 2921, 3048, 3556, 3864, 5334, 5842, 7112, 8763, 10668, 11684, 17526, 20447, 21336, 23368, 35052, 40894, 42953, 61341, 70104, 81788, 85906, 122682, 128859, 163576, 171812, 245364, 257718, 300671, 343624, 490728, 515436, 601342, 902013, 987919, 1030872, 1202684, 1804026, 1975838, 2405368, 2963757, 3608052, 3951676, 5455031, 5927514, 6915433, 7216104, 7903352, 10910062, 11855028, 13830866, 16365093, 20746299, 21820124, 23710056, 27661732, 32730186, 38185217, 41492598, 43640248, 55323464, 65460372, 76370434, 82985196, 114555651, 125465713, 130920744, 152740868, 165970392, 229111302, 250931426, 305481736, 376397139, 458222604, 501862852, 752794278, 878259991, 916445208, 1003725704, 1505588556, 1756519982, 2634779973, 3011177112, 3513039964, 5269559946, 7026079928, 10539119892, 21078239784]

約数ペア:

[(1, 21078239784), (2, 10539119892), (3, 7026079928), (4, 5269559946), (6, 3513039964), (7, 3011177112), (8, 2634779973), (12, 1756519982), (14, 1505588556), (21, 1003725704), (23, 916445208), (24, 878259991), (28, 752794278), (42, 501862852), (46, 458222604), (56, 376397139), (69, 305481736), (84, 250931426), (92, 229111302), (127, 165970392), (138, 152740868), (161, 130920744), (168, 125465713), (184, 114555651), (254, 82985196), (276, 76370434), (322, 65460372), (381, 55323464), (483, 43640248), (508, 41492598), (552, 38185217), (644, 32730186), (762, 27661732), (889, 23710056), (966, 21820124), (1016, 20746299), (1288, 16365093), (1524, 13830866), (1778, 11855028), (1932, 10910062), (2667, 7903352), (2921, 7216104), (3048, 6915433), (3556, 5927514), (3864, 5455031), (5334, 3951676), (5842, 3608052), (7112, 2963757), (8763, 2405368), (10668, 1975838), (11684, 1804026), (17526, 1202684), (20447, 1030872), (21336, 987919), (23368, 902013), (35052, 601342), (40894, 515436), (42953, 490728), (61341, 343624), (70104, 300671), (81788, 257718), (85906, 245364), (122682, 171812), (128859, 163576)]