20857535990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1759}}^1\times {\mathrm{28921}}^1$

素因数の和:30728

約数の個数: 32

約数和(自身を含む): 38482456320

約数和(自身を除く): 17624920330

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 1759, 3518, 8795, 17590, 28921, 57842, 72119, 144238, 144605, 289210, 360595, 721190, 1185761, 2371522, 5928805, 11857610, 50872039, 101744078, 254360195, 508720390, 2085753599, 4171507198, 10428767995, 20857535990]

約数ペア:

[(1, 20857535990), (2, 10428767995), (5, 4171507198), (10, 2085753599), (41, 508720390), (82, 254360195), (205, 101744078), (410, 50872039), (1759, 11857610), (3518, 5928805), (8795, 2371522), (17590, 1185761), (28921, 721190), (57842, 360595), (72119, 289210), (144238, 144605)]