215689311

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{521}}^1$

素因数の和:821

約数の個数: 40

約数和(自身を含む): 341074800

約数和(自身を除く): 125385489

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 269, 513, 521, 807, 1539, 1563, 2421, 4689, 5111, 7263, 9899, 14067, 15333, 21789, 29697, 42201, 45999, 89091, 137997, 140149, 267273, 413991, 420447, 801819, 1261341, 2662831, 3784023, 7988493, 11352069, 23965479, 71896437, 215689311]

約数ペア:

[(1, 215689311), (3, 71896437), (9, 23965479), (19, 11352069), (27, 7988493), (57, 3784023), (81, 2662831), (171, 1261341), (269, 801819), (513, 420447), (521, 413991), (807, 267273), (1539, 140149), (1563, 137997), (2421, 89091), (4689, 45999), (5111, 42201), (7263, 29697), (9899, 21789), (14067, 15333)]