20402305

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{269}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 30792960

約数和(自身を除く): 10390655

約数列:

[1, 5, 7, 11, 35, 55, 77, 197, 269, 385, 985, 1345, 1379, 1883, 2167, 2959, 6895, 9415, 10835, 14795, 15169, 20713, 52993, 75845, 103565, 264965, 370951, 582923, 1854755, 2914615, 4080461, 20402305]

約数ペア:

[(1, 20402305), (5, 4080461), (7, 2914615), (11, 1854755), (35, 582923), (55, 370951), (77, 264965), (197, 103565), (269, 75845), (385, 52993), (985, 20713), (1345, 15169), (1379, 14795), (1883, 10835), (2167, 9415), (2959, 6895)]