280728560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:311

約数の個数: 160

約数和(自身を含む): 782426112

約数和(自身を除く): 501697552

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 103, 112, 124, 140, 155, 157, 206, 217, 248, 280, 310, 314, 412, 434, 496, 515, 560, 620, 628, 721, 785, 824, 868, 1030, 1085, 1099, 1240, 1256, 1442, 1570, 1648, 1736, 2060, 2170, 2198, 2480, 2512, 2884, 3140, 3193, 3472, 3605, 4120, 4340, 4396, 4867, 5495, 5768, 6280, 6386, 7210, 8240, 8680, 8792, 9734, 10990, 11536, 12560, 12772, 14420, 15965, 16171, 17360, 17584, 19468, 21980, 22351, 24335, 25544, 28840, 31930, 32342, 34069, 38936, 43960, 44702, 48670, 51088, 57680, 63860, 64684, 68138, 77872, 80855, 87920, 89404, 97340, 111755, 113197, 127720, 129368, 136276, 161710, 170345, 178808, 194680, 223510, 226394, 255440, 258736, 272552, 323420, 340690, 357616, 389360, 447020, 452788, 501301, 545104, 565985, 646840, 681380, 894040, 905576, 1002602, 1131970, 1293680, 1362760, 1788080, 1811152, 2005204, 2263940, 2506505, 2725520, 3509107, 4010408, 4527880, 5013010, 7018214, 8020816, 9055760, 10026020, 14036428, 17545535, 20052040, 28072856, 35091070, 40104080, 56145712, 70182140, 140364280, 280728560]

約数ペア:

[(1, 280728560), (2, 140364280), (4, 70182140), (5, 56145712), (7, 40104080), (8, 35091070), (10, 28072856), (14, 20052040), (16, 17545535), (20, 14036428), (28, 10026020), (31, 9055760), (35, 8020816), (40, 7018214), (56, 5013010), (62, 4527880), (70, 4010408), (80, 3509107), (103, 2725520), (112, 2506505), (124, 2263940), (140, 2005204), (155, 1811152), (157, 1788080), (206, 1362760), (217, 1293680), (248, 1131970), (280, 1002602), (310, 905576), (314, 894040), (412, 681380), (434, 646840), (496, 565985), (515, 545104), (560, 501301), (620, 452788), (628, 447020), (721, 389360), (785, 357616), (824, 340690), (868, 323420), (1030, 272552), (1085, 258736), (1099, 255440), (1240, 226394), (1256, 223510), (1442, 194680), (1570, 178808), (1648, 170345), (1736, 161710), (2060, 136276), (2170, 129368), (2198, 127720), (2480, 113197), (2512, 111755), (2884, 97340), (3140, 89404), (3193, 87920), (3472, 80855), (3605, 77872), (4120, 68138), (4340, 64684), (4396, 63860), (4867, 57680), (5495, 51088), (5768, 48670), (6280, 44702), (6386, 43960), (7210, 38936), (8240, 34069), (8680, 32342), (8792, 31930), (9734, 28840), (10990, 25544), (11536, 24335), (12560, 22351), (12772, 21980), (14420, 19468), (15965, 17584), (16171, 17360)]