21927843

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2617}}^1$

素因数の和:2656

約数の個数: 36

約数和(自身を含む): 38798760

約数和(自身を除く): 16870917

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 399, 441, 931, 1197, 2617, 2793, 7851, 8379, 18319, 23553, 49723, 54957, 128233, 149169, 164871, 348061, 384699, 447507, 1044183, 1154097, 2436427, 3132549, 7309281, 21927843]

約数ペア:

[(1, 21927843), (3, 7309281), (7, 3132549), (9, 2436427), (19, 1154097), (21, 1044183), (49, 447507), (57, 384699), (63, 348061), (133, 164871), (147, 149169), (171, 128233), (399, 54957), (441, 49723), (931, 23553), (1197, 18319), (2617, 8379), (2793, 7851)]