13388920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{223}}^1$

素因数の和:332

約数の個数: 64

約数和(自身を含む): 32256000

約数和(自身を除く): 18867080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 79, 95, 152, 158, 190, 223, 316, 380, 395, 446, 632, 760, 790, 892, 1115, 1501, 1580, 1784, 2230, 3002, 3160, 4237, 4460, 6004, 7505, 8474, 8920, 12008, 15010, 16948, 17617, 21185, 30020, 33896, 35234, 42370, 60040, 70468, 84740, 88085, 140936, 169480, 176170, 334723, 352340, 669446, 704680, 1338892, 1673615, 2677784, 3347230, 6694460, 13388920]

約数ペア:

[(1, 13388920), (2, 6694460), (4, 3347230), (5, 2677784), (8, 1673615), (10, 1338892), (19, 704680), (20, 669446), (38, 352340), (40, 334723), (76, 176170), (79, 169480), (95, 140936), (152, 88085), (158, 84740), (190, 70468), (223, 60040), (316, 42370), (380, 35234), (395, 33896), (446, 30020), (632, 21185), (760, 17617), (790, 16948), (892, 15010), (1115, 12008), (1501, 8920), (1580, 8474), (1784, 7505), (2230, 6004), (3002, 4460), (3160, 4237)]