21335685

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{641}}^1$

素因数の和:973

約数の個数: 32

約数和(自身を含む): 39197952

約数和(自身を除く): 17862267

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 317, 641, 951, 1585, 1923, 2219, 3205, 4487, 4755, 6657, 9615, 11095, 13461, 22435, 33285, 67305, 203197, 609591, 1015985, 1422379, 3047955, 4267137, 7111895, 21335685]

約数ペア:

[(1, 21335685), (3, 7111895), (5, 4267137), (7, 3047955), (15, 1422379), (21, 1015985), (35, 609591), (105, 203197), (317, 67305), (641, 33285), (951, 22435), (1585, 13461), (1923, 11095), (2219, 9615), (3205, 6657), (4487, 4755)]