19990144

素因数分解:

$2^7\times {\mathrm{59}}^1\times {\mathrm{2647}}^1$

素因数の和:2720

約数の個数: 32

約数和(自身を含む): 40514400

約数和(自身を除く): 20524256

約数列:

[1, 2, 4, 8, 16, 32, 59, 64, 118, 128, 236, 472, 944, 1888, 2647, 3776, 5294, 7552, 10588, 21176, 42352, 84704, 156173, 169408, 312346, 338816, 624692, 1249384, 2498768, 4997536, 9995072, 19990144]

約数ペア:

[(1, 19990144), (2, 9995072), (4, 4997536), (8, 2498768), (16, 1249384), (32, 624692), (59, 338816), (64, 312346), (118, 169408), (128, 156173), (236, 84704), (472, 42352), (944, 21176), (1888, 10588), (2647, 7552), (3776, 5294)]