20811908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{373}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 41783280

約数和(自身を除く): 20971372

約数列:

[1, 2, 4, 13, 26, 29, 37, 52, 58, 74, 116, 148, 373, 377, 481, 746, 754, 962, 1073, 1492, 1508, 1924, 2146, 4292, 4849, 9698, 10817, 13801, 13949, 19396, 21634, 27602, 27898, 43268, 55204, 55796, 140621, 179413, 281242, 358826, 400229, 562484, 717652, 800458, 1600916, 5202977, 10405954, 20811908]

約数ペア:

[(1, 20811908), (2, 10405954), (4, 5202977), (13, 1600916), (26, 800458), (29, 717652), (37, 562484), (52, 400229), (58, 358826), (74, 281242), (116, 179413), (148, 140621), (373, 55796), (377, 55204), (481, 43268), (746, 27898), (754, 27602), (962, 21634), (1073, 19396), (1492, 13949), (1508, 13801), (1924, 10817), (2146, 9698), (4292, 4849)]