21107401240

素因数分解:

$2^3\times 5^1\times {\mathrm{1303}}^1\times {\mathrm{404977}}^1$

素因数の和:406291

約数の個数: 32

約数和(自身を含む): 47528218080

約数和(自身を除く): 26420816840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1303, 2606, 5212, 6515, 10424, 13030, 26060, 52120, 404977, 809954, 1619908, 2024885, 3239816, 4049770, 8099540, 16199080, 527685031, 1055370062, 2110740124, 2638425155, 4221480248, 5276850310, 10553700620, 21107401240]

約数ペア:

[(1, 21107401240), (2, 10553700620), (4, 5276850310), (5, 4221480248), (8, 2638425155), (10, 2110740124), (20, 1055370062), (40, 527685031), (1303, 16199080), (2606, 8099540), (5212, 4049770), (6515, 3239816), (10424, 2024885), (13030, 1619908), (26060, 809954), (52120, 404977)]