20217952

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1$

素因数の和:359

約数の個数: 48

約数和(自身を含む): 41731200

約数和(自身を除く): 21513248

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 89, 124, 178, 229, 248, 356, 458, 496, 712, 916, 992, 1424, 1832, 2759, 2848, 3664, 5518, 7099, 7328, 11036, 14198, 20381, 22072, 28396, 40762, 44144, 56792, 81524, 88288, 113584, 163048, 227168, 326096, 631811, 652192, 1263622, 2527244, 5054488, 10108976, 20217952]

約数ペア:

[(1, 20217952), (2, 10108976), (4, 5054488), (8, 2527244), (16, 1263622), (31, 652192), (32, 631811), (62, 326096), (89, 227168), (124, 163048), (178, 113584), (229, 88288), (248, 81524), (356, 56792), (458, 44144), (496, 40762), (712, 28396), (916, 22072), (992, 20381), (1424, 14198), (1832, 11036), (2759, 7328), (2848, 7099), (3664, 5518)]