221815209

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{137177}}^1$

素因数の和:137205

約数の個数: 24

約数和(自身を含む): 375319008

約数和(自身を除く): 153503799

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 137177, 411531, 960239, 1508947, 2880717, 4526841, 6721673, 10562629, 20165019, 31687887, 73938403, 221815209]

約数ペア:

[(1, 221815209), (3, 73938403), (7, 31687887), (11, 20165019), (21, 10562629), (33, 6721673), (49, 4526841), (77, 2880717), (147, 1508947), (231, 960239), (539, 411531), (1617, 137177)]