19953213

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{379}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 32102400

約数和(自身を除く): 12149187

約数列:

[1, 3, 7, 21, 23, 69, 109, 161, 327, 379, 483, 763, 1137, 2289, 2507, 2653, 7521, 7959, 8717, 17549, 26151, 41311, 52647, 61019, 123933, 183057, 289177, 867531, 950153, 2850459, 6651071, 19953213]

約数ペア:

[(1, 19953213), (3, 6651071), (7, 2850459), (21, 950153), (23, 867531), (69, 289177), (109, 183057), (161, 123933), (327, 61019), (379, 52647), (483, 41311), (763, 26151), (1137, 17549), (2289, 8717), (2507, 7959), (2653, 7521)]