19874768

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{821}}^1$

素因数の和:935

約数の個数: 40

約数和(自身を含む): 41280840

約数和(自身を除く): 21406072

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 89, 136, 178, 272, 356, 712, 821, 1424, 1513, 1642, 3026, 3284, 6052, 6568, 12104, 13136, 13957, 24208, 27914, 55828, 73069, 111656, 146138, 223312, 292276, 584552, 1169104, 1242173, 2484346, 4968692, 9937384, 19874768]

約数ペア:

[(1, 19874768), (2, 9937384), (4, 4968692), (8, 2484346), (16, 1242173), (17, 1169104), (34, 584552), (68, 292276), (89, 223312), (136, 146138), (178, 111656), (272, 73069), (356, 55828), (712, 27914), (821, 24208), (1424, 13957), (1513, 13136), (1642, 12104), (3026, 6568), (3284, 6052)]