78255880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47717}}^1$

素因数の和:47769

約数の個数: 32

約数和(自身を含む): 180374040

約数和(自身を除く): 102118160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 47717, 95434, 190868, 238585, 381736, 477170, 954340, 1908680, 1956397, 3912794, 7825588, 9781985, 15651176, 19563970, 39127940, 78255880]

約数ペア:

[(1, 78255880), (2, 39127940), (4, 19563970), (5, 15651176), (8, 9781985), (10, 7825588), (20, 3912794), (40, 1956397), (41, 1908680), (82, 954340), (164, 477170), (205, 381736), (328, 238585), (410, 190868), (820, 95434), (1640, 47717)]