21020490

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{751}}^1$

素因数の和:1075

約数の個数: 48

約数和(自身を含む): 54902016

約数和(自身を除く): 33881526

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 311, 622, 751, 933, 1502, 1555, 1866, 2253, 2799, 3110, 3755, 4506, 4665, 5598, 6759, 7510, 9330, 11265, 13518, 13995, 22530, 27990, 33795, 67590, 233561, 467122, 700683, 1167805, 1401366, 2102049, 2335610, 3503415, 4204098, 7006830, 10510245, 21020490]

約数ペア:

[(1, 21020490), (2, 10510245), (3, 7006830), (5, 4204098), (6, 3503415), (9, 2335610), (10, 2102049), (15, 1401366), (18, 1167805), (30, 700683), (45, 467122), (90, 233561), (311, 67590), (622, 33795), (751, 27990), (933, 22530), (1502, 13995), (1555, 13518), (1866, 11265), (2253, 9330), (2799, 7510), (3110, 6759), (3755, 5598), (4506, 4665)]