128921128

素因数分解:

$2^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{25867}}^1$

素因数の和:25969

約数の個数: 32

約数和(自身を含む): 279374400

約数和(自身を除く): 150453272

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 89, 178, 356, 623, 712, 1246, 2492, 4984, 25867, 51734, 103468, 181069, 206936, 362138, 724276, 1448552, 2302163, 4604326, 9208652, 16115141, 18417304, 32230282, 64460564, 128921128]

約数ペア:

[(1, 128921128), (2, 64460564), (4, 32230282), (7, 18417304), (8, 16115141), (14, 9208652), (28, 4604326), (56, 2302163), (89, 1448552), (178, 724276), (356, 362138), (623, 206936), (712, 181069), (1246, 103468), (2492, 51734), (4984, 25867)]