20773840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{173}}^1$

素因数の和:284

約数の個数: 80

約数和(自身を含む): 51782400

約数和(自身を除く): 31008560

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 79, 80, 95, 152, 158, 173, 190, 304, 316, 346, 380, 395, 632, 692, 760, 790, 865, 1264, 1384, 1501, 1520, 1580, 1730, 2768, 3002, 3160, 3287, 3460, 6004, 6320, 6574, 6920, 7505, 12008, 13148, 13667, 13840, 15010, 16435, 24016, 26296, 27334, 30020, 32870, 52592, 54668, 60040, 65740, 68335, 109336, 120080, 131480, 136670, 218672, 259673, 262960, 273340, 519346, 546680, 1038692, 1093360, 1298365, 2077384, 2596730, 4154768, 5193460, 10386920, 20773840]

約数ペア:

[(1, 20773840), (2, 10386920), (4, 5193460), (5, 4154768), (8, 2596730), (10, 2077384), (16, 1298365), (19, 1093360), (20, 1038692), (38, 546680), (40, 519346), (76, 273340), (79, 262960), (80, 259673), (95, 218672), (152, 136670), (158, 131480), (173, 120080), (190, 109336), (304, 68335), (316, 65740), (346, 60040), (380, 54668), (395, 52592), (632, 32870), (692, 30020), (760, 27334), (790, 26296), (865, 24016), (1264, 16435), (1384, 15010), (1501, 13840), (1520, 13667), (1580, 13148), (1730, 12008), (2768, 7505), (3002, 6920), (3160, 6574), (3287, 6320), (3460, 6004)]