208982800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{40189}}^1$

素因数の和:40220

約数の個数: 60

約数和(自身を含む): 540716260

約数和(自身を除く): 331733460

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 5200, 40189, 80378, 160756, 200945, 321512, 401890, 522457, 643024, 803780, 1004725, 1044914, 1607560, 2009450, 2089828, 2612285, 3215120, 4018900, 4179656, 5224570, 8037800, 8359312, 10449140, 13061425, 16075600, 20898280, 26122850, 41796560, 52245700, 104491400, 208982800]

約数ペア:

[(1, 208982800), (2, 104491400), (4, 52245700), (5, 41796560), (8, 26122850), (10, 20898280), (13, 16075600), (16, 13061425), (20, 10449140), (25, 8359312), (26, 8037800), (40, 5224570), (50, 4179656), (52, 4018900), (65, 3215120), (80, 2612285), (100, 2089828), (104, 2009450), (130, 1607560), (200, 1044914), (208, 1004725), (260, 803780), (325, 643024), (400, 522457), (520, 401890), (650, 321512), (1040, 200945), (1300, 160756), (2600, 80378), (5200, 40189)]