21490872

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{68881}}^1$

素因数の和:68903

約数の個数: 32

約数和(自身を含む): 57860880

約数和(自身を除く): 36370008

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 68881, 137762, 206643, 275524, 413286, 551048, 826572, 895453, 1653144, 1790906, 2686359, 3581812, 5372718, 7163624, 10745436, 21490872]

約数ペア:

[(1, 21490872), (2, 10745436), (3, 7163624), (4, 5372718), (6, 3581812), (8, 2686359), (12, 1790906), (13, 1653144), (24, 895453), (26, 826572), (39, 551048), (52, 413286), (78, 275524), (104, 206643), (156, 137762), (312, 68881)]