20115721808

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{82729}}^1$

素因数の和:82924

約数の個数: 80

約数和(自身を含む): 48256078080

約数和(自身を除く): 28140356272

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 167, 182, 208, 334, 364, 668, 728, 1169, 1336, 1456, 2171, 2338, 2672, 4342, 4676, 8684, 9352, 15197, 17368, 18704, 30394, 34736, 60788, 82729, 121576, 165458, 243152, 330916, 579103, 661832, 1075477, 1158206, 1323664, 2150954, 2316412, 4301908, 4632824, 7528339, 8603816, 9265648, 13815743, 15056678, 17207632, 27631486, 30113356, 55262972, 60226712, 96710201, 110525944, 120453424, 179604659, 193420402, 221051888, 359209318, 386840804, 718418636, 773681608, 1257232613, 1436837272, 1547363216, 2514465226, 2873674544, 5028930452, 10057860904, 20115721808]

約数ペア:

[(1, 20115721808), (2, 10057860904), (4, 5028930452), (7, 2873674544), (8, 2514465226), (13, 1547363216), (14, 1436837272), (16, 1257232613), (26, 773681608), (28, 718418636), (52, 386840804), (56, 359209318), (91, 221051888), (104, 193420402), (112, 179604659), (167, 120453424), (182, 110525944), (208, 96710201), (334, 60226712), (364, 55262972), (668, 30113356), (728, 27631486), (1169, 17207632), (1336, 15056678), (1456, 13815743), (2171, 9265648), (2338, 8603816), (2672, 7528339), (4342, 4632824), (4676, 4301908), (8684, 2316412), (9352, 2150954), (15197, 1323664), (17368, 1158206), (18704, 1075477), (30394, 661832), (34736, 579103), (60788, 330916), (82729, 243152), (121576, 165458)]