28168580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{2099}}^1$

素因数の和:2180

約数の個数: 48

約数和(自身を含む): 65620800

約数和(自身を除く): 37452220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1342, 2099, 2684, 3355, 4198, 6710, 8396, 10495, 13420, 20990, 23089, 41980, 46178, 92356, 115445, 128039, 230890, 256078, 461780, 512156, 640195, 1280390, 1408429, 2560780, 2816858, 5633716, 7042145, 14084290, 28168580]

約数ペア:

[(1, 28168580), (2, 14084290), (4, 7042145), (5, 5633716), (10, 2816858), (11, 2560780), (20, 1408429), (22, 1280390), (44, 640195), (55, 512156), (61, 461780), (110, 256078), (122, 230890), (220, 128039), (244, 115445), (305, 92356), (610, 46178), (671, 41980), (1220, 23089), (1342, 20990), (2099, 13420), (2684, 10495), (3355, 8396), (4198, 6710)]