17819800

素因数分解:

$2^3\times 5^2\times {\mathrm{139}}^1\times {\mathrm{641}}^1$

素因数の和:796

約数の個数: 48

約数和(自身を含む): 41794200

約数和(自身を除く): 23974400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 139, 200, 278, 556, 641, 695, 1112, 1282, 1390, 2564, 2780, 3205, 3475, 5128, 5560, 6410, 6950, 12820, 13900, 16025, 25640, 27800, 32050, 64100, 89099, 128200, 178198, 356396, 445495, 712792, 890990, 1781980, 2227475, 3563960, 4454950, 8909900, 17819800]

約数ペア:

[(1, 17819800), (2, 8909900), (4, 4454950), (5, 3563960), (8, 2227475), (10, 1781980), (20, 890990), (25, 712792), (40, 445495), (50, 356396), (100, 178198), (139, 128200), (200, 89099), (278, 64100), (556, 32050), (641, 27800), (695, 25640), (1112, 16025), (1282, 13900), (1390, 12820), (2564, 6950), (2780, 6410), (3205, 5560), (3475, 5128)]