21284781

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{419}}^1$

素因数の和:529

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 12584019

約数列:

[1, 3, 7, 21, 41, 59, 123, 177, 287, 413, 419, 861, 1239, 1257, 2419, 2933, 7257, 8799, 16933, 17179, 24721, 50799, 51537, 74163, 120253, 173047, 360759, 519141, 1013561, 3040683, 7094927, 21284781]

約数ペア:

[(1, 21284781), (3, 7094927), (7, 3040683), (21, 1013561), (41, 519141), (59, 360759), (123, 173047), (177, 120253), (287, 74163), (413, 51537), (419, 50799), (861, 24721), (1239, 17179), (1257, 16933), (2419, 8799), (2933, 7257)]