81797872

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{479}}^1\times {\mathrm{821}}^1$

素因数の和:1321

約数の個数: 40

約数和(自身を含む): 171239040

約数和(自身を除く): 89441168

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 479, 821, 958, 1642, 1916, 3284, 3832, 6227, 6568, 7664, 10673, 12454, 13136, 21346, 24908, 42692, 49816, 85384, 99632, 170768, 393259, 786518, 1573036, 3146072, 5112367, 6292144, 10224734, 20449468, 40898936, 81797872]

約数ペア:

[(1, 81797872), (2, 40898936), (4, 20449468), (8, 10224734), (13, 6292144), (16, 5112367), (26, 3146072), (52, 1573036), (104, 786518), (208, 393259), (479, 170768), (821, 99632), (958, 85384), (1642, 49816), (1916, 42692), (3284, 24908), (3832, 21346), (6227, 13136), (6568, 12454), (7664, 10673)]