201521900

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{809}}^1$

素因数の和:923

約数の個数: 72

約数和(自身を含む): 455595840

約数和(自身を除く): 254073940

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 53, 94, 100, 106, 188, 212, 235, 265, 470, 530, 809, 940, 1060, 1175, 1325, 1618, 2350, 2491, 2650, 3236, 4045, 4700, 4982, 5300, 8090, 9964, 12455, 16180, 20225, 24910, 38023, 40450, 42877, 49820, 62275, 76046, 80900, 85754, 124550, 152092, 171508, 190115, 214385, 249100, 380230, 428770, 760460, 857540, 950575, 1071925, 1901150, 2015219, 2143850, 3802300, 4030438, 4287700, 8060876, 10076095, 20152190, 40304380, 50380475, 100760950, 201521900]

約数ペア:

[(1, 201521900), (2, 100760950), (4, 50380475), (5, 40304380), (10, 20152190), (20, 10076095), (25, 8060876), (47, 4287700), (50, 4030438), (53, 3802300), (94, 2143850), (100, 2015219), (106, 1901150), (188, 1071925), (212, 950575), (235, 857540), (265, 760460), (470, 428770), (530, 380230), (809, 249100), (940, 214385), (1060, 190115), (1175, 171508), (1325, 152092), (1618, 124550), (2350, 85754), (2491, 80900), (2650, 76046), (3236, 62275), (4045, 49820), (4700, 42877), (4982, 40450), (5300, 38023), (8090, 24910), (9964, 20225), (12455, 16180)]