21972540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1459}}^1$

素因数の和:1722

約数の個数: 48

約数和(自身を含む): 61810560

約数和(自身を除く): 39838020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 251, 502, 753, 1004, 1255, 1459, 1506, 2510, 2918, 3012, 3765, 4377, 5020, 5836, 7295, 7530, 8754, 14590, 15060, 17508, 21885, 29180, 43770, 87540, 366209, 732418, 1098627, 1464836, 1831045, 2197254, 3662090, 4394508, 5493135, 7324180, 10986270, 21972540]

約数ペア:

[(1, 21972540), (2, 10986270), (3, 7324180), (4, 5493135), (5, 4394508), (6, 3662090), (10, 2197254), (12, 1831045), (15, 1464836), (20, 1098627), (30, 732418), (60, 366209), (251, 87540), (502, 43770), (753, 29180), (1004, 21885), (1255, 17508), (1459, 15060), (1506, 14590), (2510, 8754), (2918, 7530), (3012, 7295), (3765, 5836), (4377, 5020)]