21429405

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{16421}}^1$

素因数の和:16461

約数の個数: 24

約数和(自身を含む): 38427480

約数和(自身を除く): 16998075

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 16421, 49263, 82105, 147789, 246315, 476209, 738945, 1428627, 2381045, 4285881, 7143135, 21429405]

約数ペア:

[(1, 21429405), (3, 7143135), (5, 4285881), (9, 2381045), (15, 1428627), (29, 738945), (45, 476209), (87, 246315), (145, 147789), (261, 82105), (435, 49263), (1305, 16421)]