129544840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{36389}}^1$

素因数の和:36489

約数の個数: 32

約数和(自身を含む): 294759000

約数和(自身を除く): 165214160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 36389, 72778, 145556, 181945, 291112, 363890, 727780, 1455560, 3238621, 6477242, 12954484, 16193105, 25908968, 32386210, 64772420, 129544840]

約数ペア:

[(1, 129544840), (2, 64772420), (4, 32386210), (5, 25908968), (8, 16193105), (10, 12954484), (20, 6477242), (40, 3238621), (89, 1455560), (178, 727780), (356, 363890), (445, 291112), (712, 181945), (890, 145556), (1780, 72778), (3560, 36389)]