128218900

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{18059}}^1$

素因数の和:18144

約数の個数: 36

約数和(自身を含む): 282169440

約数和(自身を除く): 153950540

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 142, 284, 355, 710, 1420, 1775, 3550, 7100, 18059, 36118, 72236, 90295, 180590, 361180, 451475, 902950, 1282189, 1805900, 2564378, 5128756, 6410945, 12821890, 25643780, 32054725, 64109450, 128218900]

約数ペア:

[(1, 128218900), (2, 64109450), (4, 32054725), (5, 25643780), (10, 12821890), (20, 6410945), (25, 5128756), (50, 2564378), (71, 1805900), (100, 1282189), (142, 902950), (284, 451475), (355, 361180), (710, 180590), (1420, 90295), (1775, 72236), (3550, 36118), (7100, 18059)]