81370240

素因数分解:

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

素因数の和:510

約数の個数: 128

約数和(自身を含む): 228251520

約数和(自身を除く): 146881280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 41, 56, 64, 70, 80, 82, 112, 128, 140, 160, 164, 205, 224, 280, 287, 320, 328, 410, 443, 448, 560, 574, 640, 656, 820, 886, 896, 1120, 1148, 1312, 1435, 1640, 1772, 2215, 2240, 2296, 2624, 2870, 3101, 3280, 3544, 4430, 4480, 4592, 5248, 5740, 6202, 6560, 7088, 8860, 9184, 11480, 12404, 13120, 14176, 15505, 17720, 18163, 18368, 22960, 24808, 26240, 28352, 31010, 35440, 36326, 36736, 45920, 49616, 56704, 62020, 70880, 72652, 90815, 91840, 99232, 124040, 127141, 141760, 145304, 181630, 183680, 198464, 248080, 254282, 283520, 290608, 363260, 396928, 496160, 508564, 581216, 635705, 726520, 992320, 1017128, 1162432, 1271410, 1453040, 1984640, 2034256, 2324864, 2542820, 2906080, 4068512, 5085640, 5812160, 8137024, 10171280, 11624320, 16274048, 20342560, 40685120, 81370240]

約数ペア:

[(1, 81370240), (2, 40685120), (4, 20342560), (5, 16274048), (7, 11624320), (8, 10171280), (10, 8137024), (14, 5812160), (16, 5085640), (20, 4068512), (28, 2906080), (32, 2542820), (35, 2324864), (40, 2034256), (41, 1984640), (56, 1453040), (64, 1271410), (70, 1162432), (80, 1017128), (82, 992320), (112, 726520), (128, 635705), (140, 581216), (160, 508564), (164, 496160), (205, 396928), (224, 363260), (280, 290608), (287, 283520), (320, 254282), (328, 248080), (410, 198464), (443, 183680), (448, 181630), (560, 145304), (574, 141760), (640, 127141), (656, 124040), (820, 99232), (886, 91840), (896, 90815), (1120, 72652), (1148, 70880), (1312, 62020), (1435, 56704), (1640, 49616), (1772, 45920), (2215, 36736), (2240, 36326), (2296, 35440), (2624, 31010), (2870, 28352), (3101, 26240), (3280, 24808), (3544, 22960), (4430, 18368), (4480, 18163), (4592, 17720), (5248, 15505), (5740, 14176), (6202, 13120), (6560, 12404), (7088, 11480), (8860, 9184)]