20797245

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{641}}^1$

素因数の和:762

約数の個数: 48

約数和(自身を含む): 41663232

約数和(自身を除く): 20865987

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 103, 105, 309, 315, 515, 641, 721, 927, 1545, 1923, 2163, 3205, 3605, 4487, 4635, 5769, 6489, 9615, 10815, 13461, 22435, 28845, 32445, 40383, 66023, 67305, 198069, 201915, 330115, 462161, 594207, 990345, 1386483, 2310805, 2971035, 4159449, 6932415, 20797245]

約数ペア:

[(1, 20797245), (3, 6932415), (5, 4159449), (7, 2971035), (9, 2310805), (15, 1386483), (21, 990345), (35, 594207), (45, 462161), (63, 330115), (103, 201915), (105, 198069), (309, 67305), (315, 66023), (515, 40383), (641, 32445), (721, 28845), (927, 22435), (1545, 13461), (1923, 10815), (2163, 9615), (3205, 6489), (3605, 5769), (4487, 4635)]