1990480

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{179}}^1$

素因数の和:331

約数の個数: 40

約数和(自身を含む): 4687200

約数和(自身を除く): 2696720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 179, 278, 358, 556, 695, 716, 895, 1112, 1390, 1432, 1790, 2224, 2780, 2864, 3580, 5560, 7160, 11120, 14320, 24881, 49762, 99524, 124405, 199048, 248810, 398096, 497620, 995240, 1990480]

約数ペア:

[(1, 1990480), (2, 995240), (4, 497620), (5, 398096), (8, 248810), (10, 199048), (16, 124405), (20, 99524), (40, 49762), (80, 24881), (139, 14320), (179, 11120), (278, 7160), (358, 5560), (556, 3580), (695, 2864), (716, 2780), (895, 2224), (1112, 1790), (1390, 1432)]