1717739720

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{393977}}^1$

素因数の和:394097

約数の個数: 32

約数和(自身を含む): 3900382200

約数和(自身を除く): 2182642480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 393977, 787954, 1575908, 1969885, 3151816, 3939770, 7879540, 15759080, 42943493, 85886986, 171773972, 214717465, 343547944, 429434930, 858869860, 1717739720]

約数ペア:

[(1, 1717739720), (2, 858869860), (4, 429434930), (5, 343547944), (8, 214717465), (10, 171773972), (20, 85886986), (40, 42943493), (109, 15759080), (218, 7879540), (436, 3939770), (545, 3151816), (872, 1969885), (1090, 1575908), (2180, 787954), (4360, 393977)]