21077955

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3631}}^1$

素因数の和:3688

約数の個数: 32

約数和(自身を含む): 38353920

約数和(自身を除く): 17275965

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 215, 387, 645, 1161, 1935, 3631, 5805, 10893, 18155, 32679, 54465, 98037, 156133, 163395, 468399, 490185, 780665, 1405197, 2341995, 4215591, 7025985, 21077955]

約数ペア:

[(1, 21077955), (3, 7025985), (5, 4215591), (9, 2341995), (15, 1405197), (27, 780665), (43, 490185), (45, 468399), (129, 163395), (135, 156133), (215, 98037), (387, 54465), (645, 32679), (1161, 18155), (1935, 10893), (3631, 5805)]