215372277

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{139943}}^1$

素因数の和:139974

約数の個数: 20

約数和(自身を含む): 338664480

約数和(自身を除く): 123292203

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 139943, 419829, 1259487, 2658917, 3778461, 7976751, 11335383, 23930253, 71790759, 215372277]

約数ペア:

[(1, 215372277), (3, 71790759), (9, 23930253), (19, 11335383), (27, 7976751), (57, 3778461), (81, 2658917), (171, 1259487), (513, 419829), (1539, 139943)]