21179718

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{983}}^1$

素因数の和:1023

約数の個数: 80

約数和(自身を含む): 57150720

約数和(自身を除く): 35971002

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 19, 21, 27, 38, 42, 54, 57, 63, 81, 114, 126, 133, 162, 171, 189, 266, 342, 378, 399, 513, 567, 798, 983, 1026, 1134, 1197, 1539, 1966, 2394, 2949, 3078, 3591, 5898, 6881, 7182, 8847, 10773, 13762, 17694, 18677, 20643, 21546, 26541, 37354, 41286, 53082, 56031, 61929, 79623, 112062, 123858, 130739, 159246, 168093, 185787, 261478, 336186, 371574, 392217, 504279, 557361, 784434, 1008558, 1114722, 1176651, 1512837, 2353302, 3025674, 3529953, 7059906, 10589859, 21179718]

約数ペア:

[(1, 21179718), (2, 10589859), (3, 7059906), (6, 3529953), (7, 3025674), (9, 2353302), (14, 1512837), (18, 1176651), (19, 1114722), (21, 1008558), (27, 784434), (38, 557361), (42, 504279), (54, 392217), (57, 371574), (63, 336186), (81, 261478), (114, 185787), (126, 168093), (133, 159246), (162, 130739), (171, 123858), (189, 112062), (266, 79623), (342, 61929), (378, 56031), (399, 53082), (513, 41286), (567, 37354), (798, 26541), (983, 21546), (1026, 20643), (1134, 18677), (1197, 17694), (1539, 13762), (1966, 10773), (2394, 8847), (2949, 7182), (3078, 6881), (3591, 5898)]