21269328

素因数分解:

$2^4\times 3^1\times {\mathrm{71}}^1\times {\mathrm{79}}^2$

素因数の和:240

約数の個数: 60

約数和(自身を含む): 56433888

約数和(自身を除く): 35164560

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 71, 79, 142, 158, 213, 237, 284, 316, 426, 474, 568, 632, 852, 948, 1136, 1264, 1704, 1896, 3408, 3792, 5609, 6241, 11218, 12482, 16827, 18723, 22436, 24964, 33654, 37446, 44872, 49928, 67308, 74892, 89744, 99856, 134616, 149784, 269232, 299568, 443111, 886222, 1329333, 1772444, 2658666, 3544888, 5317332, 7089776, 10634664, 21269328]

約数ペア:

[(1, 21269328), (2, 10634664), (3, 7089776), (4, 5317332), (6, 3544888), (8, 2658666), (12, 1772444), (16, 1329333), (24, 886222), (48, 443111), (71, 299568), (79, 269232), (142, 149784), (158, 134616), (213, 99856), (237, 89744), (284, 74892), (316, 67308), (426, 49928), (474, 44872), (568, 37446), (632, 33654), (852, 24964), (948, 22436), (1136, 18723), (1264, 16827), (1704, 12482), (1896, 11218), (3408, 6241), (3792, 5609)]