217989861

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{797}}^1$

素因数の和:1021

約数の個数: 32

約数和(自身を含む): 319915008

約数和(自身を除く): 101925147

約数列:

[1, 3, 17, 31, 51, 93, 173, 519, 527, 797, 1581, 2391, 2941, 5363, 8823, 13549, 16089, 24707, 40647, 74121, 91171, 137881, 273513, 413643, 420019, 1260057, 2343977, 4274311, 7031931, 12822933, 72663287, 217989861]

約数ペア:

[(1, 217989861), (3, 72663287), (17, 12822933), (31, 7031931), (51, 4274311), (93, 2343977), (173, 1260057), (519, 420019), (527, 413643), (797, 273513), (1581, 137881), (2391, 91171), (2941, 74121), (5363, 40647), (8823, 24707), (13549, 16089)]