21187860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1951}}^1$

素因数の和:2144

約数の個数: 48

約数和(自身を含む): 59684352

約数和(自身を除く): 38496492

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 181, 362, 543, 724, 905, 1086, 1810, 1951, 2172, 2715, 3620, 3902, 5430, 5853, 7804, 9755, 10860, 11706, 19510, 23412, 29265, 39020, 58530, 117060, 353131, 706262, 1059393, 1412524, 1765655, 2118786, 3531310, 4237572, 5296965, 7062620, 10593930, 21187860]

約数ペア:

[(1, 21187860), (2, 10593930), (3, 7062620), (4, 5296965), (5, 4237572), (6, 3531310), (10, 2118786), (12, 1765655), (15, 1412524), (20, 1059393), (30, 706262), (60, 353131), (181, 117060), (362, 58530), (543, 39020), (724, 29265), (905, 23412), (1086, 19510), (1810, 11706), (1951, 10860), (2172, 9755), (2715, 7804), (3620, 5853), (3902, 5430)]