21888380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{57601}}^1$

素因数の和:57629

約数の個数: 24

約数和(自身を含む): 48385680

約数和(自身を除く): 26497300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 57601, 115202, 230404, 288005, 576010, 1094419, 1152020, 2188838, 4377676, 5472095, 10944190, 21888380]

約数ペア:

[(1, 21888380), (2, 10944190), (4, 5472095), (5, 4377676), (10, 2188838), (19, 1152020), (20, 1094419), (38, 576010), (76, 288005), (95, 230404), (190, 115202), (380, 57601)]