20470780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{769}}^1$

素因数の和:811

約数の個数: 48

約数和(自身を含む): 47345760

約数和(自身を除く): 26874980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 769, 1210, 1331, 1538, 2420, 2662, 3076, 3845, 5324, 6655, 7690, 8459, 13310, 15380, 16918, 26620, 33836, 42295, 84590, 93049, 169180, 186098, 372196, 465245, 930490, 1023539, 1860980, 2047078, 4094156, 5117695, 10235390, 20470780]

約数ペア:

[(1, 20470780), (2, 10235390), (4, 5117695), (5, 4094156), (10, 2047078), (11, 1860980), (20, 1023539), (22, 930490), (44, 465245), (55, 372196), (110, 186098), (121, 169180), (220, 93049), (242, 84590), (484, 42295), (605, 33836), (769, 26620), (1210, 16918), (1331, 15380), (1538, 13310), (2420, 8459), (2662, 7690), (3076, 6655), (3845, 5324)]