77946640

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13723}}^1$

素因数の和:13807

約数の個数: 40

約数和(自身を含む): 183791808

約数和(自身を除く): 105845168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 13723, 27446, 54892, 68615, 109784, 137230, 219568, 274460, 548920, 974333, 1097840, 1948666, 3897332, 4871665, 7794664, 9743330, 15589328, 19486660, 38973320, 77946640]

約数ペア:

[(1, 77946640), (2, 38973320), (4, 19486660), (5, 15589328), (8, 9743330), (10, 7794664), (16, 4871665), (20, 3897332), (40, 1948666), (71, 1097840), (80, 974333), (142, 548920), (284, 274460), (355, 219568), (568, 137230), (710, 109784), (1136, 68615), (1420, 54892), (2840, 27446), (5680, 13723)]