11917940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 26745600

約数和(自身を除く): 14827660

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 79, 95, 158, 190, 316, 380, 395, 397, 790, 794, 1501, 1580, 1588, 1985, 3002, 3970, 6004, 7505, 7543, 7940, 15010, 15086, 30020, 30172, 31363, 37715, 62726, 75430, 125452, 150860, 156815, 313630, 595897, 627260, 1191794, 2383588, 2979485, 5958970, 11917940]

約数ペア:

[(1, 11917940), (2, 5958970), (4, 2979485), (5, 2383588), (10, 1191794), (19, 627260), (20, 595897), (38, 313630), (76, 156815), (79, 150860), (95, 125452), (158, 75430), (190, 62726), (316, 37715), (380, 31363), (395, 30172), (397, 30020), (790, 15086), (794, 15010), (1501, 7940), (1580, 7543), (1588, 7505), (1985, 6004), (3002, 3970)]