19203580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{2129}}^1$

素因数の和:2190

約数の個数: 48

約数和(自身を含む): 45087840

約数和(自身を除く): 25884260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2129, 2255, 4258, 4510, 8516, 9020, 10645, 21290, 23419, 42580, 46838, 87289, 93676, 117095, 174578, 234190, 349156, 436445, 468380, 872890, 960179, 1745780, 1920358, 3840716, 4800895, 9601790, 19203580]

約数ペア:

[(1, 19203580), (2, 9601790), (4, 4800895), (5, 3840716), (10, 1920358), (11, 1745780), (20, 960179), (22, 872890), (41, 468380), (44, 436445), (55, 349156), (82, 234190), (110, 174578), (164, 117095), (205, 93676), (220, 87289), (410, 46838), (451, 42580), (820, 23419), (902, 21290), (1804, 10645), (2129, 9020), (2255, 8516), (4258, 4510)]