20650245

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{941}}^1$

素因数の和:986

約数の個数: 64

約数和(自身を含む): 43407360

約数和(自身を除く): 22757115

約数列:

[1, 3, 5, 7, 11, 15, 19, 21, 33, 35, 55, 57, 77, 95, 105, 133, 165, 209, 231, 285, 385, 399, 627, 665, 941, 1045, 1155, 1463, 1995, 2823, 3135, 4389, 4705, 6587, 7315, 10351, 14115, 17879, 19761, 21945, 31053, 32935, 51755, 53637, 72457, 89395, 98805, 125153, 155265, 196669, 217371, 268185, 362285, 375459, 590007, 625765, 983345, 1086855, 1376683, 1877295, 2950035, 4130049, 6883415, 20650245]

約数ペア:

[(1, 20650245), (3, 6883415), (5, 4130049), (7, 2950035), (11, 1877295), (15, 1376683), (19, 1086855), (21, 983345), (33, 625765), (35, 590007), (55, 375459), (57, 362285), (77, 268185), (95, 217371), (105, 196669), (133, 155265), (165, 125153), (209, 98805), (231, 89395), (285, 72457), (385, 53637), (399, 51755), (627, 32935), (665, 31053), (941, 21945), (1045, 19761), (1155, 17879), (1463, 14115), (1995, 10351), (2823, 7315), (3135, 6587), (4389, 4705)]