21455000

素因数分解:

$2^3\times 5^4\times 7^1\times {\mathrm{613}}^1$

素因数の和:646

約数の個数: 80

約数和(自身を含む): 57544080

約数和(自身を除く): 36089080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 125, 140, 175, 200, 250, 280, 350, 500, 613, 625, 700, 875, 1000, 1226, 1250, 1400, 1750, 2452, 2500, 3065, 3500, 4291, 4375, 4904, 5000, 6130, 7000, 8582, 8750, 12260, 15325, 17164, 17500, 21455, 24520, 30650, 34328, 35000, 42910, 61300, 76625, 85820, 107275, 122600, 153250, 171640, 214550, 306500, 383125, 429100, 536375, 613000, 766250, 858200, 1072750, 1532500, 2145500, 2681875, 3065000, 4291000, 5363750, 10727500, 21455000]

約数ペア:

[(1, 21455000), (2, 10727500), (4, 5363750), (5, 4291000), (7, 3065000), (8, 2681875), (10, 2145500), (14, 1532500), (20, 1072750), (25, 858200), (28, 766250), (35, 613000), (40, 536375), (50, 429100), (56, 383125), (70, 306500), (100, 214550), (125, 171640), (140, 153250), (175, 122600), (200, 107275), (250, 85820), (280, 76625), (350, 61300), (500, 42910), (613, 35000), (625, 34328), (700, 30650), (875, 24520), (1000, 21455), (1226, 17500), (1250, 17164), (1400, 15325), (1750, 12260), (2452, 8750), (2500, 8582), (3065, 7000), (3500, 6130), (4291, 5000), (4375, 4904)]