21452730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{821}}^1$

素因数の和:911

約数の個数: 64

約数和(自身を含む): 56343168

約数和(自身を除く): 34890438

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 67, 78, 130, 134, 195, 201, 335, 390, 402, 670, 821, 871, 1005, 1642, 1742, 2010, 2463, 2613, 4105, 4355, 4926, 5226, 8210, 8710, 10673, 12315, 13065, 21346, 24630, 26130, 32019, 53365, 55007, 64038, 106730, 110014, 160095, 165021, 275035, 320190, 330042, 550070, 715091, 825105, 1430182, 1650210, 2145273, 3575455, 4290546, 7150910, 10726365, 21452730]

約数ペア:

[(1, 21452730), (2, 10726365), (3, 7150910), (5, 4290546), (6, 3575455), (10, 2145273), (13, 1650210), (15, 1430182), (26, 825105), (30, 715091), (39, 550070), (65, 330042), (67, 320190), (78, 275035), (130, 165021), (134, 160095), (195, 110014), (201, 106730), (335, 64038), (390, 55007), (402, 53365), (670, 32019), (821, 26130), (871, 24630), (1005, 21346), (1642, 13065), (1742, 12315), (2010, 10673), (2463, 8710), (2613, 8210), (4105, 5226), (4355, 4926)]