231657309

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{353}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 371105280

約数和(自身を除く): 139447971

約数列:

[1, 3, 9, 13, 39, 71, 79, 117, 213, 237, 353, 639, 711, 923, 1027, 1059, 2769, 3081, 3177, 4589, 5609, 8307, 9243, 13767, 16827, 25063, 27887, 41301, 50481, 72917, 75189, 83661, 218751, 225567, 250983, 325819, 362531, 656253, 977457, 1087593, 1979977, 2932371, 3262779, 5939931, 17819793, 25739701, 77219103, 231657309]

約数ペア:

[(1, 231657309), (3, 77219103), (9, 25739701), (13, 17819793), (39, 5939931), (71, 3262779), (79, 2932371), (117, 1979977), (213, 1087593), (237, 977457), (353, 656253), (639, 362531), (711, 325819), (923, 250983), (1027, 225567), (1059, 218751), (2769, 83661), (3081, 75189), (3177, 72917), (4589, 50481), (5609, 41301), (8307, 27887), (9243, 25063), (13767, 16827)]