21293001

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{457}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 32008704

約数和(自身を除く): 10715703

約数列:

[1, 3, 9, 31, 93, 167, 279, 457, 501, 1371, 1503, 4113, 5177, 14167, 15531, 42501, 46593, 76319, 127503, 228957, 686871, 2365889, 7097667, 21293001]

約数ペア:

[(1, 21293001), (3, 7097667), (9, 2365889), (31, 686871), (93, 228957), (167, 127503), (279, 76319), (457, 46593), (501, 42501), (1371, 15531), (1503, 14167), (4113, 5177)]