21024381

素因数分解:

$3^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{1607}}^1$

素因数の和:1713

約数の個数: 24

約数和(自身を含む): 32996160

約数和(自身を除く): 11971779

約数列:

[1, 3, 7, 21, 49, 89, 147, 267, 623, 1607, 1869, 4361, 4821, 11249, 13083, 33747, 78743, 143023, 236229, 429069, 1001161, 3003483, 7008127, 21024381]

約数ペア:

[(1, 21024381), (3, 7008127), (7, 3003483), (21, 1001161), (49, 429069), (89, 236229), (147, 143023), (267, 78743), (623, 33747), (1607, 13083), (1869, 11249), (4361, 4821)]