21086940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50207}}^1$

素因数の和:50226

約数の個数: 48

約数和(自身を含む): 67479552

約数和(自身を除く): 46392612

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50207, 100414, 150621, 200828, 251035, 301242, 351449, 502070, 602484, 702898, 753105, 1004140, 1054347, 1405796, 1506210, 1757245, 2108694, 3012420, 3514490, 4217388, 5271735, 7028980, 10543470, 21086940]

約数ペア:

[(1, 21086940), (2, 10543470), (3, 7028980), (4, 5271735), (5, 4217388), (6, 3514490), (7, 3012420), (10, 2108694), (12, 1757245), (14, 1506210), (15, 1405796), (20, 1054347), (21, 1004140), (28, 753105), (30, 702898), (35, 602484), (42, 502070), (60, 351449), (70, 301242), (84, 251035), (105, 200828), (140, 150621), (210, 100414), (420, 50207)]