84209920

素因数分解:

$2^8\times 5^1\times {\mathrm{65789}}^1$

素因数の和:65810

約数の個数: 36

約数和(自身を含む): 201712140

約数和(自身を除く): 117502220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 65789, 131578, 263156, 328945, 526312, 657890, 1052624, 1315780, 2105248, 2631560, 4210496, 5263120, 8420992, 10526240, 16841984, 21052480, 42104960, 84209920]

約数ペア:

[(1, 84209920), (2, 42104960), (4, 21052480), (5, 16841984), (8, 10526240), (10, 8420992), (16, 5263120), (20, 4210496), (32, 2631560), (40, 2105248), (64, 1315780), (80, 1052624), (128, 657890), (160, 526312), (256, 328945), (320, 263156), (640, 131578), (1280, 65789)]