20041984

素因数分解:

$2^8\times {\mathrm{79}}^1\times {\mathrm{991}}^1$

素因数の和:1086

約数の個数: 36

約数和(自身を含む): 40552960

約数和(自身を除く): 20510976

約数列:

[1, 2, 4, 8, 16, 32, 64, 79, 128, 158, 256, 316, 632, 991, 1264, 1982, 2528, 3964, 5056, 7928, 10112, 15856, 20224, 31712, 63424, 78289, 126848, 156578, 253696, 313156, 626312, 1252624, 2505248, 5010496, 10020992, 20041984]

約数ペア:

[(1, 20041984), (2, 10020992), (4, 5010496), (8, 2505248), (16, 1252624), (32, 626312), (64, 313156), (79, 253696), (128, 156578), (158, 126848), (256, 78289), (316, 63424), (632, 31712), (991, 20224), (1264, 15856), (1982, 10112), (2528, 7928), (3964, 5056)]