68740040

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{19309}}^1$

素因数の和:19409

約数の個数: 32

約数和(自身を含む): 156411000

約数和(自身を除く): 87670960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 19309, 38618, 77236, 96545, 154472, 193090, 386180, 772360, 1718501, 3437002, 6874004, 8592505, 13748008, 17185010, 34370020, 68740040]

約数ペア:

[(1, 68740040), (2, 34370020), (4, 17185010), (5, 13748008), (8, 8592505), (10, 6874004), (20, 3437002), (40, 1718501), (89, 772360), (178, 386180), (356, 193090), (445, 154472), (712, 96545), (890, 77236), (1780, 38618), (3560, 19309)]