205509990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{978619}}^1$

素因数の和:978636

約数の個数: 32

約数和(自身を含む): 563685120

約数和(自身を除く): 358175130

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 978619, 1957238, 2935857, 4893095, 5871714, 6850333, 9786190, 13700666, 14679285, 20550999, 29358570, 34251665, 41101998, 68503330, 102754995, 205509990]

約数ペア:

[(1, 205509990), (2, 102754995), (3, 68503330), (5, 41101998), (6, 34251665), (7, 29358570), (10, 20550999), (14, 14679285), (15, 13700666), (21, 9786190), (30, 6850333), (35, 5871714), (42, 4893095), (70, 2935857), (105, 1957238), (210, 978619)]