81899790

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{389999}}^1$

素因数の和:390016

約数の個数: 32

約数和(自身を含む): 224640000

約数和(自身を除く): 142740210

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 389999, 779998, 1169997, 1949995, 2339994, 2729993, 3899990, 5459986, 5849985, 8189979, 11699970, 13649965, 16379958, 27299930, 40949895, 81899790]

約数ペア:

[(1, 81899790), (2, 40949895), (3, 27299930), (5, 16379958), (6, 13649965), (7, 11699970), (10, 8189979), (14, 5849985), (15, 5459986), (21, 3899990), (30, 2729993), (35, 2339994), (42, 1949995), (70, 1169997), (105, 779998), (210, 389999)]