31687983

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:205

約数の個数: 48

約数和(自身を含む): 51870720

約数和(自身を除く): 20182737

約数列:

[1, 3, 9, 17, 27, 31, 51, 93, 131, 153, 279, 289, 393, 459, 527, 837, 867, 1179, 1581, 2227, 2601, 3537, 4061, 4743, 6681, 7803, 8959, 12183, 14229, 20043, 26877, 36549, 37859, 60129, 69037, 80631, 109647, 113577, 207111, 241893, 340731, 621333, 1022193, 1173629, 1863999, 3520887, 10562661, 31687983]

約数ペア:

[(1, 31687983), (3, 10562661), (9, 3520887), (17, 1863999), (27, 1173629), (31, 1022193), (51, 621333), (93, 340731), (131, 241893), (153, 207111), (279, 113577), (289, 109647), (393, 80631), (459, 69037), (527, 60129), (837, 37859), (867, 36549), (1179, 26877), (1581, 20043), (2227, 14229), (2601, 12183), (3537, 8959), (4061, 7803), (4743, 6681)]