19188920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28219}}^1$

素因数の和:28247

約数の個数: 32

約数和(自身を含む): 45716400

約数和(自身を除く): 26527480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 28219, 56438, 112876, 141095, 225752, 282190, 479723, 564380, 959446, 1128760, 1918892, 2398615, 3837784, 4797230, 9594460, 19188920]

約数ペア:

[(1, 19188920), (2, 9594460), (4, 4797230), (5, 3837784), (8, 2398615), (10, 1918892), (17, 1128760), (20, 959446), (34, 564380), (40, 479723), (68, 282190), (85, 225752), (136, 141095), (170, 112876), (340, 56438), (680, 28219)]