201215720

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{20873}}^1$

素因数の和:21125

約数の個数: 32

約数和(自身を含む): 454635720

約数和(自身を除く): 253420000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1928, 2410, 4820, 9640, 20873, 41746, 83492, 104365, 166984, 208730, 417460, 834920, 5030393, 10060786, 20121572, 25151965, 40243144, 50303930, 100607860, 201215720]

約数ペア:

[(1, 201215720), (2, 100607860), (4, 50303930), (5, 40243144), (8, 25151965), (10, 20121572), (20, 10060786), (40, 5030393), (241, 834920), (482, 417460), (964, 208730), (1205, 166984), (1928, 104365), (2410, 83492), (4820, 41746), (9640, 20873)]