20609204

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^3\times {\mathrm{79}}^1$

素因数の和:130

約数の個数: 72

約数和(自身を含む): 46730880

約数和(自身を除く): 26121676

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 79, 98, 121, 154, 158, 196, 242, 308, 316, 484, 539, 553, 847, 869, 1078, 1106, 1331, 1694, 1738, 2156, 2212, 2662, 3388, 3476, 3871, 5324, 5929, 6083, 7742, 9317, 9559, 11858, 12166, 15484, 18634, 19118, 23716, 24332, 37268, 38236, 42581, 65219, 66913, 85162, 105149, 130438, 133826, 170324, 210298, 260876, 267652, 420596, 468391, 736043, 936782, 1472086, 1873564, 2944172, 5152301, 10304602, 20609204]

約数ペア:

[(1, 20609204), (2, 10304602), (4, 5152301), (7, 2944172), (11, 1873564), (14, 1472086), (22, 936782), (28, 736043), (44, 468391), (49, 420596), (77, 267652), (79, 260876), (98, 210298), (121, 170324), (154, 133826), (158, 130438), (196, 105149), (242, 85162), (308, 66913), (316, 65219), (484, 42581), (539, 38236), (553, 37268), (847, 24332), (869, 23716), (1078, 19118), (1106, 18634), (1331, 15484), (1694, 12166), (1738, 11858), (2156, 9559), (2212, 9317), (2662, 7742), (3388, 6083), (3476, 5929), (3871, 5324)]