9781100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:267

約数の個数: 72

約数和(自身を含む): 24685920

約数和(自身を除く): 14904820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 89, 100, 140, 157, 175, 178, 314, 350, 356, 445, 623, 628, 700, 785, 890, 1099, 1246, 1570, 1780, 2198, 2225, 2492, 3115, 3140, 3925, 4396, 4450, 5495, 6230, 7850, 8900, 10990, 12460, 13973, 15575, 15700, 21980, 27475, 27946, 31150, 54950, 55892, 62300, 69865, 97811, 109900, 139730, 195622, 279460, 349325, 391244, 489055, 698650, 978110, 1397300, 1956220, 2445275, 4890550, 9781100]

約数ペア:

[(1, 9781100), (2, 4890550), (4, 2445275), (5, 1956220), (7, 1397300), (10, 978110), (14, 698650), (20, 489055), (25, 391244), (28, 349325), (35, 279460), (50, 195622), (70, 139730), (89, 109900), (100, 97811), (140, 69865), (157, 62300), (175, 55892), (178, 54950), (314, 31150), (350, 27946), (356, 27475), (445, 21980), (623, 15700), (628, 15575), (700, 13973), (785, 12460), (890, 10990), (1099, 8900), (1246, 7850), (1570, 6230), (1780, 5495), (2198, 4450), (2225, 4396), (2492, 3925), (3115, 3140)]