21057321789

素因数分解:

$3^3\times 7^2\times {\mathrm{15916343}}^1$

素因数の和:15916366

約数の個数: 24

約数和(自身を含む): 36289264320

約数和(自身を除く): 15231942531

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 15916343, 47749029, 111414401, 143247087, 334243203, 429741261, 779900807, 1002729609, 2339702421, 3008188827, 7019107263, 21057321789]

約数ペア:

[(1, 21057321789), (3, 7019107263), (7, 3008188827), (9, 2339702421), (21, 1002729609), (27, 779900807), (49, 429741261), (63, 334243203), (147, 143247087), (189, 111414401), (441, 47749029), (1323, 15916343)]