2102980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{79}}^1$

素因数の和:121

約数の個数: 48

約数和(自身を含む): 4919040

約数和(自身を除く): 2816060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 121, 158, 220, 242, 316, 395, 484, 605, 790, 869, 1210, 1331, 1580, 1738, 2420, 2662, 3476, 4345, 5324, 6655, 8690, 9559, 13310, 17380, 19118, 26620, 38236, 47795, 95590, 105149, 191180, 210298, 420596, 525745, 1051490, 2102980]

約数ペア:

[(1, 2102980), (2, 1051490), (4, 525745), (5, 420596), (10, 210298), (11, 191180), (20, 105149), (22, 95590), (44, 47795), (55, 38236), (79, 26620), (110, 19118), (121, 17380), (158, 13310), (220, 9559), (242, 8690), (316, 6655), (395, 5324), (484, 4345), (605, 3476), (790, 2662), (869, 2420), (1210, 1738), (1331, 1580)]