20017500

素因数分解:

$2^2\times 3^1\times 5^4\times {\mathrm{17}}^1\times {\mathrm{157}}^1$

素因数の和:201

約数の個数: 120

約数和(自身を含む): 62192592

約数和(自身を除く): 42175092

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 25, 30, 34, 50, 51, 60, 68, 75, 85, 100, 102, 125, 150, 157, 170, 204, 250, 255, 300, 314, 340, 375, 425, 471, 500, 510, 625, 628, 750, 785, 850, 942, 1020, 1250, 1275, 1500, 1570, 1700, 1875, 1884, 2125, 2355, 2500, 2550, 2669, 3140, 3750, 3925, 4250, 4710, 5100, 5338, 6375, 7500, 7850, 8007, 8500, 9420, 10625, 10676, 11775, 12750, 13345, 15700, 16014, 19625, 21250, 23550, 25500, 26690, 31875, 32028, 39250, 40035, 42500, 47100, 53380, 58875, 63750, 66725, 78500, 80070, 98125, 117750, 127500, 133450, 160140, 196250, 200175, 235500, 266900, 294375, 333625, 392500, 400350, 588750, 667250, 800700, 1000875, 1177500, 1334500, 1668125, 2001750, 3336250, 4003500, 5004375, 6672500, 10008750, 20017500]

約数ペア:

[(1, 20017500), (2, 10008750), (3, 6672500), (4, 5004375), (5, 4003500), (6, 3336250), (10, 2001750), (12, 1668125), (15, 1334500), (17, 1177500), (20, 1000875), (25, 800700), (30, 667250), (34, 588750), (50, 400350), (51, 392500), (60, 333625), (68, 294375), (75, 266900), (85, 235500), (100, 200175), (102, 196250), (125, 160140), (150, 133450), (157, 127500), (170, 117750), (204, 98125), (250, 80070), (255, 78500), (300, 66725), (314, 63750), (340, 58875), (375, 53380), (425, 47100), (471, 42500), (500, 40035), (510, 39250), (625, 32028), (628, 31875), (750, 26690), (785, 25500), (850, 23550), (942, 21250), (1020, 19625), (1250, 16014), (1275, 15700), (1500, 13345), (1570, 12750), (1700, 11775), (1875, 10676), (1884, 10625), (2125, 9420), (2355, 8500), (2500, 8007), (2550, 7850), (2669, 7500), (3140, 6375), (3750, 5338), (3925, 5100), (4250, 4710)]