39965000

素因数分解:

$2^3\times 5^4\times {\mathrm{7993}}^1$

素因数の和:8019

約数の個数: 40

約数和(自身を含む): 93649710

約数和(自身を除く): 53684710

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000, 7993, 15986, 31972, 39965, 63944, 79930, 159860, 199825, 319720, 399650, 799300, 999125, 1598600, 1998250, 3996500, 4995625, 7993000, 9991250, 19982500, 39965000]

約数ペア:

[(1, 39965000), (2, 19982500), (4, 9991250), (5, 7993000), (8, 4995625), (10, 3996500), (20, 1998250), (25, 1598600), (40, 999125), (50, 799300), (100, 399650), (125, 319720), (200, 199825), (250, 159860), (500, 79930), (625, 63944), (1000, 39965), (1250, 31972), (2500, 15986), (5000, 7993)]