8640280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{269}}^1$

素因数の和:364

約数の個数: 64

約数和(自身を含む): 21578400

約数和(自身を除く): 12938120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 269, 292, 365, 440, 538, 584, 730, 803, 1076, 1345, 1460, 1606, 2152, 2690, 2920, 2959, 3212, 4015, 5380, 5918, 6424, 8030, 10760, 11836, 14795, 16060, 19637, 23672, 29590, 32120, 39274, 59180, 78548, 98185, 118360, 157096, 196370, 216007, 392740, 432014, 785480, 864028, 1080035, 1728056, 2160070, 4320140, 8640280]

約数ペア:

[(1, 8640280), (2, 4320140), (4, 2160070), (5, 1728056), (8, 1080035), (10, 864028), (11, 785480), (20, 432014), (22, 392740), (40, 216007), (44, 196370), (55, 157096), (73, 118360), (88, 98185), (110, 78548), (146, 59180), (220, 39274), (269, 32120), (292, 29590), (365, 23672), (440, 19637), (538, 16060), (584, 14795), (730, 11836), (803, 10760), (1076, 8030), (1345, 6424), (1460, 5918), (1606, 5380), (2152, 4015), (2690, 3212), (2920, 2959)]