20210547

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^3$

素因数の和:140

約数の個数: 32

約数和(自身を含む): 33318400

約数和(自身を除く): 13107853

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 1369, 2109, 4107, 4921, 9583, 14763, 26011, 28749, 50653, 78033, 151959, 182077, 354571, 546231, 962407, 1063713, 2887221, 6736849, 20210547]

約数ペア:

[(1, 20210547), (3, 6736849), (7, 2887221), (19, 1063713), (21, 962407), (37, 546231), (57, 354571), (111, 182077), (133, 151959), (259, 78033), (399, 50653), (703, 28749), (777, 26011), (1369, 14763), (2109, 9583), (4107, 4921)]