21970980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:131

約数の個数: 192

約数和(自身を含む): 74995200

約数和(自身を除く): 53024220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 29, 30, 36, 45, 46, 54, 58, 60, 61, 69, 87, 90, 92, 108, 115, 116, 122, 135, 138, 145, 174, 180, 183, 207, 230, 244, 261, 270, 276, 290, 305, 345, 348, 366, 414, 435, 460, 522, 540, 549, 580, 610, 621, 667, 690, 732, 783, 828, 870, 915, 1035, 1044, 1098, 1220, 1242, 1305, 1334, 1380, 1403, 1566, 1647, 1740, 1769, 1830, 2001, 2070, 2196, 2484, 2610, 2668, 2745, 2806, 3105, 3132, 3294, 3335, 3538, 3660, 3915, 4002, 4140, 4209, 5220, 5307, 5490, 5612, 6003, 6210, 6588, 6670, 7015, 7076, 7830, 8004, 8235, 8418, 8845, 10005, 10614, 10980, 12006, 12420, 12627, 13340, 14030, 15660, 15921, 16470, 16836, 17690, 18009, 20010, 21045, 21228, 24012, 25254, 26535, 28060, 30015, 31842, 32940, 35380, 36018, 37881, 40020, 40687, 42090, 47763, 50508, 53070, 60030, 63135, 63684, 72036, 75762, 79605, 81374, 84180, 90045, 95526, 106140, 120060, 122061, 126270, 151524, 159210, 162748, 180090, 189405, 191052, 203435, 238815, 244122, 252540, 318420, 360180, 366183, 378810, 406870, 477630, 488244, 610305, 732366, 757620, 813740, 955260, 1098549, 1220610, 1464732, 1830915, 2197098, 2441220, 3661830, 4394196, 5492745, 7323660, 10985490, 21970980]

約数ペア:

[(1, 21970980), (2, 10985490), (3, 7323660), (4, 5492745), (5, 4394196), (6, 3661830), (9, 2441220), (10, 2197098), (12, 1830915), (15, 1464732), (18, 1220610), (20, 1098549), (23, 955260), (27, 813740), (29, 757620), (30, 732366), (36, 610305), (45, 488244), (46, 477630), (54, 406870), (58, 378810), (60, 366183), (61, 360180), (69, 318420), (87, 252540), (90, 244122), (92, 238815), (108, 203435), (115, 191052), (116, 189405), (122, 180090), (135, 162748), (138, 159210), (145, 151524), (174, 126270), (180, 122061), (183, 120060), (207, 106140), (230, 95526), (244, 90045), (261, 84180), (270, 81374), (276, 79605), (290, 75762), (305, 72036), (345, 63684), (348, 63135), (366, 60030), (414, 53070), (435, 50508), (460, 47763), (522, 42090), (540, 40687), (549, 40020), (580, 37881), (610, 36018), (621, 35380), (667, 32940), (690, 31842), (732, 30015), (783, 28060), (828, 26535), (870, 25254), (915, 24012), (1035, 21228), (1044, 21045), (1098, 20010), (1220, 18009), (1242, 17690), (1305, 16836), (1334, 16470), (1380, 15921), (1403, 15660), (1566, 14030), (1647, 13340), (1740, 12627), (1769, 12420), (1830, 12006), (2001, 10980), (2070, 10614), (2196, 10005), (2484, 8845), (2610, 8418), (2668, 8235), (2745, 8004), (2806, 7830), (3105, 7076), (3132, 7015), (3294, 6670), (3335, 6588), (3538, 6210), (3660, 6003), (3915, 5612), (4002, 5490), (4140, 5307), (4209, 5220)]