65558320

素因数分解:

$2^4\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1669}}^1$

素因数の和:2173

約数の個数: 40

約数和(自身を含む): 152825040

約数和(自身を除く): 87266720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491, 982, 1669, 1964, 2455, 3338, 3928, 4910, 6676, 7856, 8345, 9820, 13352, 16690, 19640, 26704, 33380, 39280, 66760, 133520, 819479, 1638958, 3277916, 4097395, 6555832, 8194790, 13111664, 16389580, 32779160, 65558320]

約数ペア:

[(1, 65558320), (2, 32779160), (4, 16389580), (5, 13111664), (8, 8194790), (10, 6555832), (16, 4097395), (20, 3277916), (40, 1638958), (80, 819479), (491, 133520), (982, 66760), (1669, 39280), (1964, 33380), (2455, 26704), (3338, 19640), (3928, 16690), (4910, 13352), (6676, 9820), (7856, 8345)]