18955377

素因数分解:

$3^4\times 7^1\times {\mathrm{101}}^1\times {\mathrm{331}}^1$

素因数の和:451

約数の個数: 40

約数和(自身を含む): 32780352

約数和(自身を除く): 13824975

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 101, 189, 303, 331, 567, 707, 909, 993, 2121, 2317, 2727, 2979, 6363, 6951, 8181, 8937, 19089, 20853, 26811, 33431, 57267, 62559, 100293, 187677, 234017, 300879, 702051, 902637, 2106153, 2707911, 6318459, 18955377]

約数ペア:

[(1, 18955377), (3, 6318459), (7, 2707911), (9, 2106153), (21, 902637), (27, 702051), (63, 300879), (81, 234017), (101, 187677), (189, 100293), (303, 62559), (331, 57267), (567, 33431), (707, 26811), (909, 20853), (993, 19089), (2121, 8937), (2317, 8181), (2727, 6951), (2979, 6363)]