21227241

素因数分解:

$3^1\times 7^5\times {\mathrm{421}}^1$

素因数の和:459

約数の個数: 24

約数和(自身を含む): 33098304

約数和(自身を除く): 11871063

約数列:

[1, 3, 7, 21, 49, 147, 343, 421, 1029, 1263, 2401, 2947, 7203, 8841, 16807, 20629, 50421, 61887, 144403, 433209, 1010821, 3032463, 7075747, 21227241]

約数ペア:

[(1, 21227241), (3, 7075747), (7, 3032463), (21, 1010821), (49, 433209), (147, 144403), (343, 61887), (421, 50421), (1029, 20629), (1263, 16807), (2401, 8841), (2947, 7203)]