21672720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{971}}^1$

素因数の和:1021

約数の個数: 120

約数和(自身を含む): 75209472

約数和(自身を除く): 53536752

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 36, 40, 45, 48, 60, 62, 72, 80, 90, 93, 120, 124, 144, 155, 180, 186, 240, 248, 279, 310, 360, 372, 465, 496, 558, 620, 720, 744, 930, 971, 1116, 1240, 1395, 1488, 1860, 1942, 2232, 2480, 2790, 2913, 3720, 3884, 4464, 4855, 5580, 5826, 7440, 7768, 8739, 9710, 11160, 11652, 14565, 15536, 17478, 19420, 22320, 23304, 29130, 30101, 34956, 38840, 43695, 46608, 58260, 60202, 69912, 77680, 87390, 90303, 116520, 120404, 139824, 150505, 174780, 180606, 233040, 240808, 270909, 301010, 349560, 361212, 451515, 481616, 541818, 602020, 699120, 722424, 903030, 1083636, 1204040, 1354545, 1444848, 1806060, 2167272, 2408080, 2709090, 3612120, 4334544, 5418180, 7224240, 10836360, 21672720]

約数ペア:

[(1, 21672720), (2, 10836360), (3, 7224240), (4, 5418180), (5, 4334544), (6, 3612120), (8, 2709090), (9, 2408080), (10, 2167272), (12, 1806060), (15, 1444848), (16, 1354545), (18, 1204040), (20, 1083636), (24, 903030), (30, 722424), (31, 699120), (36, 602020), (40, 541818), (45, 481616), (48, 451515), (60, 361212), (62, 349560), (72, 301010), (80, 270909), (90, 240808), (93, 233040), (120, 180606), (124, 174780), (144, 150505), (155, 139824), (180, 120404), (186, 116520), (240, 90303), (248, 87390), (279, 77680), (310, 69912), (360, 60202), (372, 58260), (465, 46608), (496, 43695), (558, 38840), (620, 34956), (720, 30101), (744, 29130), (930, 23304), (971, 22320), (1116, 19420), (1240, 17478), (1395, 15536), (1488, 14565), (1860, 11652), (1942, 11160), (2232, 9710), (2480, 8739), (2790, 7768), (2913, 7440), (3720, 5826), (3884, 5580), (4464, 4855)]