78857440

素因数分解:

$2^5\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1489}}^1$

素因数の和:1835

約数の個数: 48

約数和(自身を含む): 186989040

約数和(自身を除く): 108131600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 331, 662, 1324, 1489, 1655, 2648, 2978, 3310, 5296, 5956, 6620, 7445, 10592, 11912, 13240, 14890, 23824, 26480, 29780, 47648, 52960, 59560, 119120, 238240, 492859, 985718, 1971436, 2464295, 3942872, 4928590, 7885744, 9857180, 15771488, 19714360, 39428720, 78857440]

約数ペア:

[(1, 78857440), (2, 39428720), (4, 19714360), (5, 15771488), (8, 9857180), (10, 7885744), (16, 4928590), (20, 3942872), (32, 2464295), (40, 1971436), (80, 985718), (160, 492859), (331, 238240), (662, 119120), (1324, 59560), (1489, 52960), (1655, 47648), (2648, 29780), (2978, 26480), (3310, 23824), (5296, 14890), (5956, 13240), (6620, 11912), (7445, 10592)]