21674440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^3\times {\mathrm{79}}^1$

素因数の和:147

約数の個数: 64

約数和(自身を含む): 52128000

約数和(自身を除く): 30453560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 79, 95, 152, 158, 190, 316, 361, 380, 395, 632, 722, 760, 790, 1444, 1501, 1580, 1805, 2888, 3002, 3160, 3610, 6004, 6859, 7220, 7505, 12008, 13718, 14440, 15010, 27436, 28519, 30020, 34295, 54872, 57038, 60040, 68590, 114076, 137180, 142595, 228152, 274360, 285190, 541861, 570380, 1083722, 1140760, 2167444, 2709305, 4334888, 5418610, 10837220, 21674440]

約数ペア:

[(1, 21674440), (2, 10837220), (4, 5418610), (5, 4334888), (8, 2709305), (10, 2167444), (19, 1140760), (20, 1083722), (38, 570380), (40, 541861), (76, 285190), (79, 274360), (95, 228152), (152, 142595), (158, 137180), (190, 114076), (316, 68590), (361, 60040), (380, 57038), (395, 54872), (632, 34295), (722, 30020), (760, 28519), (790, 27436), (1444, 15010), (1501, 14440), (1580, 13718), (1805, 12008), (2888, 7505), (3002, 7220), (3160, 6859), (3610, 6004)]