19278380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{87629}}^1$

素因数の和:87649

約数の個数: 24

約数和(自身を含む): 44165520

約数和(自身を除く): 24887140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 87629, 175258, 350516, 438145, 876290, 963919, 1752580, 1927838, 3855676, 4819595, 9639190, 19278380]

約数ペア:

[(1, 19278380), (2, 9639190), (4, 4819595), (5, 3855676), (10, 1927838), (11, 1752580), (20, 963919), (22, 876290), (44, 438145), (55, 350516), (110, 175258), (220, 87629)]