78711320

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{19483}}^1$

素因数の和:19595

約数の個数: 32

約数和(自身を含む): 178863120

約数和(自身を除く): 100151800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 19483, 38966, 77932, 97415, 155864, 194830, 389660, 779320, 1967783, 3935566, 7871132, 9838915, 15742264, 19677830, 39355660, 78711320]

約数ペア:

[(1, 78711320), (2, 39355660), (4, 19677830), (5, 15742264), (8, 9838915), (10, 7871132), (20, 3935566), (40, 1967783), (101, 779320), (202, 389660), (404, 194830), (505, 155864), (808, 97415), (1010, 77932), (2020, 38966), (4040, 19483)]