21165456

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{317}}^1$

素因数の和:448

約数の個数: 80

約数和(自身を含む): 59621184

約数和(自身を除く): 38455728

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 107, 156, 208, 214, 312, 317, 321, 428, 624, 634, 642, 856, 951, 1268, 1284, 1391, 1712, 1902, 2536, 2568, 2782, 3804, 4121, 4173, 5072, 5136, 5564, 7608, 8242, 8346, 11128, 12363, 15216, 16484, 16692, 22256, 24726, 32968, 33384, 33919, 49452, 65936, 66768, 67838, 98904, 101757, 135676, 197808, 203514, 271352, 407028, 440947, 542704, 814056, 881894, 1322841, 1628112, 1763788, 2645682, 3527576, 5291364, 7055152, 10582728, 21165456]

約数ペア:

[(1, 21165456), (2, 10582728), (3, 7055152), (4, 5291364), (6, 3527576), (8, 2645682), (12, 1763788), (13, 1628112), (16, 1322841), (24, 881894), (26, 814056), (39, 542704), (48, 440947), (52, 407028), (78, 271352), (104, 203514), (107, 197808), (156, 135676), (208, 101757), (214, 98904), (312, 67838), (317, 66768), (321, 65936), (428, 49452), (624, 33919), (634, 33384), (642, 32968), (856, 24726), (951, 22256), (1268, 16692), (1284, 16484), (1391, 15216), (1712, 12363), (1902, 11128), (2536, 8346), (2568, 8242), (2782, 7608), (3804, 5564), (4121, 5136), (4173, 5072)]