20218842500

素因数分解:

$2^2\times 5^4\times {\mathrm{41}}^1\times {\mathrm{197257}}^1$

素因数の和:197322

約数の個数: 60

約数和(自身を含む): 45293198412

約数和(自身を除く): 25074355912

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 205, 250, 410, 500, 625, 820, 1025, 1250, 2050, 2500, 4100, 5125, 10250, 20500, 25625, 51250, 102500, 197257, 394514, 789028, 986285, 1972570, 3945140, 4931425, 8087537, 9862850, 16175074, 19725700, 24657125, 32350148, 40437685, 49314250, 80875370, 98628500, 123285625, 161750740, 202188425, 246571250, 404376850, 493142500, 808753700, 1010942125, 2021884250, 4043768500, 5054710625, 10109421250, 20218842500]

約数ペア:

[(1, 20218842500), (2, 10109421250), (4, 5054710625), (5, 4043768500), (10, 2021884250), (20, 1010942125), (25, 808753700), (41, 493142500), (50, 404376850), (82, 246571250), (100, 202188425), (125, 161750740), (164, 123285625), (205, 98628500), (250, 80875370), (410, 49314250), (500, 40437685), (625, 32350148), (820, 24657125), (1025, 19725700), (1250, 16175074), (2050, 9862850), (2500, 8087537), (4100, 4931425), (5125, 3945140), (10250, 1972570), (20500, 986285), (25625, 789028), (51250, 394514), (102500, 197257)]