128521000

素因数分解:

$2^3\times 5^3\times {\mathrm{128521}}^1$

素因数の和:128542

約数の個数: 32

約数和(自身を含む): 300741480

約数和(自身を除く): 172220480

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 128521, 257042, 514084, 642605, 1028168, 1285210, 2570420, 3213025, 5140840, 6426050, 12852100, 16065125, 25704200, 32130250, 64260500, 128521000]

約数ペア:

[(1, 128521000), (2, 64260500), (4, 32130250), (5, 25704200), (8, 16065125), (10, 12852100), (20, 6426050), (25, 5140840), (40, 3213025), (50, 2570420), (100, 1285210), (125, 1028168), (200, 642605), (250, 514084), (500, 257042), (1000, 128521)]