21383433

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{293}}^1$

素因数の和:375

約数の個数: 40

約数和(自身を含む): 34577928

約数和(自身を除く): 13194495

約数列:

[1, 3, 9, 17, 27, 51, 53, 81, 153, 159, 293, 459, 477, 879, 901, 1377, 1431, 2637, 2703, 4293, 4981, 7911, 8109, 14943, 15529, 23733, 24327, 44829, 46587, 72981, 134487, 139761, 263993, 403461, 419283, 791979, 1257849, 2375937, 7127811, 21383433]

約数ペア:

[(1, 21383433), (3, 7127811), (9, 2375937), (17, 1257849), (27, 791979), (51, 419283), (53, 403461), (81, 263993), (153, 139761), (159, 134487), (293, 72981), (459, 46587), (477, 44829), (879, 24327), (901, 23733), (1377, 15529), (1431, 14943), (2637, 8109), (2703, 7911), (4293, 4981)]