21570813

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1231}}^1$

素因数の和:1310

約数の個数: 32

約数和(自身を含む): 35481600

約数和(自身を除く): 13910787

約数列:

[1, 3, 9, 11, 27, 33, 59, 99, 177, 297, 531, 649, 1231, 1593, 1947, 3693, 5841, 11079, 13541, 17523, 33237, 40623, 72629, 121869, 217887, 365607, 653661, 798919, 1960983, 2396757, 7190271, 21570813]

約数ペア:

[(1, 21570813), (3, 7190271), (9, 2396757), (11, 1960983), (27, 798919), (33, 653661), (59, 365607), (99, 217887), (177, 121869), (297, 72629), (531, 40623), (649, 33237), (1231, 17523), (1593, 13541), (1947, 11079), (3693, 5841)]