19718380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1907}}^1$

素因数の和:1974

約数の個数: 48

約数和(自身を含む): 46158336

約数和(自身を除く): 26439956

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 94, 110, 188, 220, 235, 470, 517, 940, 1034, 1907, 2068, 2585, 3814, 5170, 7628, 9535, 10340, 19070, 20977, 38140, 41954, 83908, 89629, 104885, 179258, 209770, 358516, 419540, 448145, 896290, 985919, 1792580, 1971838, 3943676, 4929595, 9859190, 19718380]

約数ペア:

[(1, 19718380), (2, 9859190), (4, 4929595), (5, 3943676), (10, 1971838), (11, 1792580), (20, 985919), (22, 896290), (44, 448145), (47, 419540), (55, 358516), (94, 209770), (110, 179258), (188, 104885), (220, 89629), (235, 83908), (470, 41954), (517, 38140), (940, 20977), (1034, 19070), (1907, 10340), (2068, 9535), (2585, 7628), (3814, 5170)]