19386440

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11821}}^1$

素因数の和:11873

約数の個数: 32

約数和(自身を含む): 44687160

約数和(自身を除く): 25300720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11821, 23642, 47284, 59105, 94568, 118210, 236420, 472840, 484661, 969322, 1938644, 2423305, 3877288, 4846610, 9693220, 19386440]

約数ペア:

[(1, 19386440), (2, 9693220), (4, 4846610), (5, 3877288), (8, 2423305), (10, 1938644), (20, 969322), (40, 484661), (41, 472840), (82, 236420), (164, 118210), (205, 94568), (328, 59105), (410, 47284), (820, 23642), (1640, 11821)]