21429345

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1607}}^1$

素因数の和:1749

約数の個数: 32

約数和(自身を含む): 39518208

約数和(自身を除く): 18088863

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 127, 381, 635, 889, 1607, 1905, 2667, 4445, 4821, 8035, 11249, 13335, 24105, 33747, 56245, 168735, 204089, 612267, 1020445, 1428623, 3061335, 4285869, 7143115, 21429345]

約数ペア:

[(1, 21429345), (3, 7143115), (5, 4285869), (7, 3061335), (15, 1428623), (21, 1020445), (35, 612267), (105, 204089), (127, 168735), (381, 56245), (635, 33747), (889, 24105), (1607, 13335), (1905, 11249), (2667, 8035), (4445, 4821)]