21928665

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{347}}^1\times {\mathrm{383}}^1$

素因数の和:749

約数の個数: 32

約数和(自身を含む): 38486016

約数和(自身を除く): 16557351

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 347, 383, 1041, 1149, 1735, 1915, 3817, 4213, 5205, 5745, 11451, 12639, 19085, 21065, 57255, 63195, 132901, 398703, 664505, 1461911, 1993515, 4385733, 7309555, 21928665]

約数ペア:

[(1, 21928665), (3, 7309555), (5, 4385733), (11, 1993515), (15, 1461911), (33, 664505), (55, 398703), (165, 132901), (347, 63195), (383, 57255), (1041, 21065), (1149, 19085), (1735, 12639), (1915, 11451), (3817, 5745), (4213, 5205)]