91289080

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{25643}}^1$

素因数の和:25743

約数の個数: 32

約数和(自身を含む): 207716400

約数和(自身を除く): 116427320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 25643, 51286, 102572, 128215, 205144, 256430, 512860, 1025720, 2282227, 4564454, 9128908, 11411135, 18257816, 22822270, 45644540, 91289080]

約数ペア:

[(1, 91289080), (2, 45644540), (4, 22822270), (5, 18257816), (8, 11411135), (10, 9128908), (20, 4564454), (40, 2282227), (89, 1025720), (178, 512860), (356, 256430), (445, 205144), (712, 128215), (890, 102572), (1780, 51286), (3560, 25643)]