21988260

素因数分解:

$2^2\times 3^4\times 5^1\times 7^2\times {\mathrm{277}}^1$

素因数の和:312

約数の個数: 180

約数和(自身を含む): 80529372

約数和(自身を除く): 58541112

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 245, 252, 270, 277, 294, 315, 324, 378, 405, 420, 441, 490, 540, 554, 567, 588, 630, 735, 756, 810, 831, 882, 945, 980, 1108, 1134, 1260, 1323, 1385, 1470, 1620, 1662, 1764, 1890, 1939, 2205, 2268, 2493, 2646, 2770, 2835, 2940, 3324, 3780, 3878, 3969, 4155, 4410, 4986, 5292, 5540, 5670, 5817, 6615, 7479, 7756, 7938, 8310, 8820, 9695, 9972, 11340, 11634, 12465, 13230, 13573, 14958, 15876, 16620, 17451, 19390, 19845, 22437, 23268, 24930, 26460, 27146, 29085, 29916, 34902, 37395, 38780, 39690, 40719, 44874, 49860, 52353, 54292, 58170, 67865, 69804, 74790, 79380, 81438, 87255, 89748, 104706, 112185, 116340, 122157, 135730, 149580, 157059, 162876, 174510, 203595, 209412, 224370, 244314, 261765, 271460, 314118, 349020, 366471, 407190, 448740, 488628, 523530, 610785, 628236, 732942, 785295, 814380, 1047060, 1099413, 1221570, 1465884, 1570590, 1832355, 2198826, 2443140, 3141180, 3664710, 4397652, 5497065, 7329420, 10994130, 21988260]

約数ペア:

[(1, 21988260), (2, 10994130), (3, 7329420), (4, 5497065), (5, 4397652), (6, 3664710), (7, 3141180), (9, 2443140), (10, 2198826), (12, 1832355), (14, 1570590), (15, 1465884), (18, 1221570), (20, 1099413), (21, 1047060), (27, 814380), (28, 785295), (30, 732942), (35, 628236), (36, 610785), (42, 523530), (45, 488628), (49, 448740), (54, 407190), (60, 366471), (63, 349020), (70, 314118), (81, 271460), (84, 261765), (90, 244314), (98, 224370), (105, 209412), (108, 203595), (126, 174510), (135, 162876), (140, 157059), (147, 149580), (162, 135730), (180, 122157), (189, 116340), (196, 112185), (210, 104706), (245, 89748), (252, 87255), (270, 81438), (277, 79380), (294, 74790), (315, 69804), (324, 67865), (378, 58170), (405, 54292), (420, 52353), (441, 49860), (490, 44874), (540, 40719), (554, 39690), (567, 38780), (588, 37395), (630, 34902), (735, 29916), (756, 29085), (810, 27146), (831, 26460), (882, 24930), (945, 23268), (980, 22437), (1108, 19845), (1134, 19390), (1260, 17451), (1323, 16620), (1385, 15876), (1470, 14958), (1620, 13573), (1662, 13230), (1764, 12465), (1890, 11634), (1939, 11340), (2205, 9972), (2268, 9695), (2493, 8820), (2646, 8310), (2770, 7938), (2835, 7756), (2940, 7479), (3324, 6615), (3780, 5817), (3878, 5670), (3969, 5540), (4155, 5292), (4410, 4986)]