20515952

素因数分解:

$2^4\times {\mathrm{59}}^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1$

素因数の和:381

約数の個数: 40

約数和(自身を含む): 41009280

約数和(自身を除く): 20493328

約数列:

[1, 2, 4, 8, 16, 59, 103, 118, 206, 211, 236, 412, 422, 472, 824, 844, 944, 1648, 1688, 3376, 6077, 12154, 12449, 21733, 24308, 24898, 43466, 48616, 49796, 86932, 97232, 99592, 173864, 199184, 347728, 1282247, 2564494, 5128988, 10257976, 20515952]

約数ペア:

[(1, 20515952), (2, 10257976), (4, 5128988), (8, 2564494), (16, 1282247), (59, 347728), (103, 199184), (118, 173864), (206, 99592), (211, 97232), (236, 86932), (412, 49796), (422, 48616), (472, 43466), (824, 24898), (844, 24308), (944, 21733), (1648, 12449), (1688, 12154), (3376, 6077)]