17905520

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:210

約数の個数: 80

約数和(自身を含む): 43872192

約数和(自身を除く): 25966672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 53, 80, 82, 103, 106, 164, 205, 206, 212, 265, 328, 410, 412, 424, 515, 530, 656, 820, 824, 848, 1030, 1060, 1640, 1648, 2060, 2120, 2173, 3280, 4120, 4223, 4240, 4346, 5459, 8240, 8446, 8692, 10865, 10918, 16892, 17384, 21115, 21730, 21836, 27295, 33784, 34768, 42230, 43460, 43672, 54590, 67568, 84460, 86920, 87344, 109180, 168920, 173840, 218360, 223819, 337840, 436720, 447638, 895276, 1119095, 1790552, 2238190, 3581104, 4476380, 8952760, 17905520]

約数ペア:

[(1, 17905520), (2, 8952760), (4, 4476380), (5, 3581104), (8, 2238190), (10, 1790552), (16, 1119095), (20, 895276), (40, 447638), (41, 436720), (53, 337840), (80, 223819), (82, 218360), (103, 173840), (106, 168920), (164, 109180), (205, 87344), (206, 86920), (212, 84460), (265, 67568), (328, 54590), (410, 43672), (412, 43460), (424, 42230), (515, 34768), (530, 33784), (656, 27295), (820, 21836), (824, 21730), (848, 21115), (1030, 17384), (1060, 16892), (1640, 10918), (1648, 10865), (2060, 8692), (2120, 8446), (2173, 8240), (3280, 5459), (4120, 4346), (4223, 4240)]