12668440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{211}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 30528000

約数和(自身を除く): 17859560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 79, 95, 152, 158, 190, 211, 316, 380, 395, 422, 632, 760, 790, 844, 1055, 1501, 1580, 1688, 2110, 3002, 3160, 4009, 4220, 6004, 7505, 8018, 8440, 12008, 15010, 16036, 16669, 20045, 30020, 32072, 33338, 40090, 60040, 66676, 80180, 83345, 133352, 160360, 166690, 316711, 333380, 633422, 666760, 1266844, 1583555, 2533688, 3167110, 6334220, 12668440]

約数ペア:

[(1, 12668440), (2, 6334220), (4, 3167110), (5, 2533688), (8, 1583555), (10, 1266844), (19, 666760), (20, 633422), (38, 333380), (40, 316711), (76, 166690), (79, 160360), (95, 133352), (152, 83345), (158, 80180), (190, 66676), (211, 60040), (316, 40090), (380, 33338), (395, 32072), (422, 30020), (632, 20045), (760, 16669), (790, 16036), (844, 15010), (1055, 12008), (1501, 8440), (1580, 8018), (1688, 7505), (2110, 6004), (3002, 4220), (3160, 4009)]