21872552

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:202

約数の個数: 64

約数和(自身を含む): 46495680

約数和(自身を除く): 24623128

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 67, 73, 86, 104, 134, 146, 172, 268, 292, 344, 536, 559, 584, 871, 949, 1118, 1742, 1898, 2236, 2881, 3139, 3484, 3796, 4472, 4891, 5762, 6278, 6968, 7592, 9782, 11524, 12556, 19564, 23048, 25112, 37453, 39128, 40807, 63583, 74906, 81614, 127166, 149812, 163228, 210313, 254332, 299624, 326456, 420626, 508664, 841252, 1682504, 2734069, 5468138, 10936276, 21872552]

約数ペア:

[(1, 21872552), (2, 10936276), (4, 5468138), (8, 2734069), (13, 1682504), (26, 841252), (43, 508664), (52, 420626), (67, 326456), (73, 299624), (86, 254332), (104, 210313), (134, 163228), (146, 149812), (172, 127166), (268, 81614), (292, 74906), (344, 63583), (536, 40807), (559, 39128), (584, 37453), (871, 25112), (949, 23048), (1118, 19564), (1742, 12556), (1898, 11524), (2236, 9782), (2881, 7592), (3139, 6968), (3484, 6278), (3796, 5762), (4472, 4891)]