399207987

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{233}}^1$

素因数の和:385

約数の個数: 64

約数和(自身を含む): 646963200

約数和(自身を除く): 247755213

約数列:

[1, 3, 9, 23, 27, 31, 69, 89, 93, 207, 233, 267, 279, 621, 699, 713, 801, 837, 2047, 2097, 2139, 2403, 2759, 5359, 6141, 6291, 6417, 7223, 8277, 16077, 18423, 19251, 20737, 21669, 24831, 48231, 55269, 62211, 63457, 65007, 74493, 144693, 166129, 186633, 190371, 195021, 476951, 498387, 559899, 571113, 642847, 1430853, 1495161, 1713339, 1928541, 4292559, 4485483, 5785623, 12877677, 14785481, 17356869, 44356443, 133069329, 399207987]

約数ペア:

[(1, 399207987), (3, 133069329), (9, 44356443), (23, 17356869), (27, 14785481), (31, 12877677), (69, 5785623), (89, 4485483), (93, 4292559), (207, 1928541), (233, 1713339), (267, 1495161), (279, 1430853), (621, 642847), (699, 571113), (713, 559899), (801, 498387), (837, 476951), (2047, 195021), (2097, 190371), (2139, 186633), (2403, 166129), (2759, 144693), (5359, 74493), (6141, 65007), (6291, 63457), (6417, 62211), (7223, 55269), (8277, 48231), (16077, 24831), (18423, 21669), (19251, 20737)]