21052144

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{769}}^1$

素因数の和:865

約数の個数: 40

約数和(自身を含む): 42966000

約数和(自身を除く): 21913856

約数列:

[1, 2, 4, 8, 16, 29, 58, 59, 116, 118, 232, 236, 464, 472, 769, 944, 1538, 1711, 3076, 3422, 6152, 6844, 12304, 13688, 22301, 27376, 44602, 45371, 89204, 90742, 178408, 181484, 356816, 362968, 725936, 1315759, 2631518, 5263036, 10526072, 21052144]

約数ペア:

[(1, 21052144), (2, 10526072), (4, 5263036), (8, 2631518), (16, 1315759), (29, 725936), (58, 362968), (59, 356816), (116, 181484), (118, 178408), (232, 90742), (236, 89204), (464, 45371), (472, 44602), (769, 27376), (944, 22301), (1538, 13688), (1711, 12304), (3076, 6844), (3422, 6152)]