20342560

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{443}}^1$

素因数の和:506

約数の個数: 96

約数和(自身を含む): 56391552

約数和(自身を除く): 36048992

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 41, 56, 70, 80, 82, 112, 140, 160, 164, 205, 224, 280, 287, 328, 410, 443, 560, 574, 656, 820, 886, 1120, 1148, 1312, 1435, 1640, 1772, 2215, 2296, 2870, 3101, 3280, 3544, 4430, 4592, 5740, 6202, 6560, 7088, 8860, 9184, 11480, 12404, 14176, 15505, 17720, 18163, 22960, 24808, 31010, 35440, 36326, 45920, 49616, 62020, 70880, 72652, 90815, 99232, 124040, 127141, 145304, 181630, 248080, 254282, 290608, 363260, 496160, 508564, 581216, 635705, 726520, 1017128, 1271410, 1453040, 2034256, 2542820, 2906080, 4068512, 5085640, 10171280, 20342560]

約数ペア:

[(1, 20342560), (2, 10171280), (4, 5085640), (5, 4068512), (7, 2906080), (8, 2542820), (10, 2034256), (14, 1453040), (16, 1271410), (20, 1017128), (28, 726520), (32, 635705), (35, 581216), (40, 508564), (41, 496160), (56, 363260), (70, 290608), (80, 254282), (82, 248080), (112, 181630), (140, 145304), (160, 127141), (164, 124040), (205, 99232), (224, 90815), (280, 72652), (287, 70880), (328, 62020), (410, 49616), (443, 45920), (560, 36326), (574, 35440), (656, 31010), (820, 24808), (886, 22960), (1120, 18163), (1148, 17720), (1312, 15505), (1435, 14176), (1640, 12404), (1772, 11480), (2215, 9184), (2296, 8860), (2870, 7088), (3101, 6560), (3280, 6202), (3544, 5740), (4430, 4592)]