201089405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{1999}}^1$

素因数の和:2105

約数の個数: 32

約数和(自身を含む): 276480000

約数和(自身を除く): 75390595

約数列:

[1, 5, 11, 31, 55, 59, 155, 295, 341, 649, 1705, 1829, 1999, 3245, 9145, 9995, 20119, 21989, 61969, 100595, 109945, 117941, 309845, 589705, 681659, 1297351, 3408295, 3656171, 6486755, 18280855, 40217881, 201089405]

約数ペア:

[(1, 201089405), (5, 40217881), (11, 18280855), (31, 6486755), (55, 3656171), (59, 3408295), (155, 1297351), (295, 681659), (341, 589705), (649, 309845), (1705, 117941), (1829, 109945), (1999, 100595), (3245, 61969), (9145, 21989), (9995, 20119)]