20722676

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 40830720

約数和(自身を除く): 20108044

約数列:

[1, 2, 4, 13, 26, 47, 52, 61, 94, 122, 139, 188, 244, 278, 556, 611, 793, 1222, 1586, 1807, 2444, 2867, 3172, 3614, 5734, 6533, 7228, 8479, 11468, 13066, 16958, 26132, 33916, 37271, 74542, 84929, 110227, 149084, 169858, 220454, 339716, 398513, 440908, 797026, 1594052, 5180669, 10361338, 20722676]

約数ペア:

[(1, 20722676), (2, 10361338), (4, 5180669), (13, 1594052), (26, 797026), (47, 440908), (52, 398513), (61, 339716), (94, 220454), (122, 169858), (139, 149084), (188, 110227), (244, 84929), (278, 74542), (556, 37271), (611, 33916), (793, 26132), (1222, 16958), (1586, 13066), (1807, 11468), (2444, 8479), (2867, 7228), (3172, 6533), (3614, 5734)]