211457480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{406649}}^1$

素因数の和:406673

約数の個数: 32

約数和(自身を含む): 512379000

約数和(自身を除く): 300921520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 406649, 813298, 1626596, 2033245, 3253192, 4066490, 5286437, 8132980, 10572874, 16265960, 21145748, 26432185, 42291496, 52864370, 105728740, 211457480]

約数ペア:

[(1, 211457480), (2, 105728740), (4, 52864370), (5, 42291496), (8, 26432185), (10, 21145748), (13, 16265960), (20, 10572874), (26, 8132980), (40, 5286437), (52, 4066490), (65, 3253192), (104, 2033245), (130, 1626596), (260, 813298), (520, 406649)]