19991088

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{181}}^1$

素因数の和:267

約数の個数: 120

約数和(自身を含む): 61610640

約数和(自身を除く): 41619552

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 59, 72, 78, 104, 117, 118, 144, 156, 177, 181, 208, 234, 236, 312, 354, 362, 468, 472, 531, 543, 624, 708, 724, 767, 936, 944, 1062, 1086, 1416, 1448, 1534, 1629, 1872, 2124, 2172, 2301, 2353, 2832, 2896, 3068, 3258, 4248, 4344, 4602, 4706, 6136, 6516, 6903, 7059, 8496, 8688, 9204, 9412, 10679, 12272, 13032, 13806, 14118, 18408, 18824, 21177, 21358, 26064, 27612, 28236, 32037, 36816, 37648, 42354, 42716, 55224, 56472, 64074, 84708, 85432, 96111, 110448, 112944, 128148, 138827, 169416, 170864, 192222, 256296, 277654, 338832, 384444, 416481, 512592, 555308, 768888, 832962, 1110616, 1249443, 1537776, 1665924, 2221232, 2498886, 3331848, 4997772, 6663696, 9995544, 19991088]

約数ペア:

[(1, 19991088), (2, 9995544), (3, 6663696), (4, 4997772), (6, 3331848), (8, 2498886), (9, 2221232), (12, 1665924), (13, 1537776), (16, 1249443), (18, 1110616), (24, 832962), (26, 768888), (36, 555308), (39, 512592), (48, 416481), (52, 384444), (59, 338832), (72, 277654), (78, 256296), (104, 192222), (117, 170864), (118, 169416), (144, 138827), (156, 128148), (177, 112944), (181, 110448), (208, 96111), (234, 85432), (236, 84708), (312, 64074), (354, 56472), (362, 55224), (468, 42716), (472, 42354), (531, 37648), (543, 36816), (624, 32037), (708, 28236), (724, 27612), (767, 26064), (936, 21358), (944, 21177), (1062, 18824), (1086, 18408), (1416, 14118), (1448, 13806), (1534, 13032), (1629, 12272), (1872, 10679), (2124, 9412), (2172, 9204), (2301, 8688), (2353, 8496), (2832, 7059), (2896, 6903), (3068, 6516), (3258, 6136), (4248, 4706), (4344, 4602)]