21660

素因数分解:

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

素因数の和:50

約数の個数: 36

約数和(自身を含む): 64008

約数和(自身を除く): 42348

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 361, 380, 570, 722, 1083, 1140, 1444, 1805, 2166, 3610, 4332, 5415, 7220, 10830, 21660]

約数ペア:

[(1, 21660), (2, 10830), (3, 7220), (4, 5415), (5, 4332), (6, 3610), (10, 2166), (12, 1805), (15, 1444), (19, 1140), (20, 1083), (30, 722), (38, 570), (57, 380), (60, 361), (76, 285), (95, 228), (114, 190)]