639843785

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{3767}}^1$

素因数の和:4013

約数の個数: 32

約数和(自身を含む): 920236032

約数和(自身を除く): 280392247

約数列:

[1, 5, 7, 23, 35, 115, 161, 211, 805, 1055, 1477, 3767, 4853, 7385, 18835, 24265, 26369, 33971, 86641, 131845, 169855, 433205, 606487, 794837, 3032435, 3974185, 5563859, 18281251, 27819295, 91406255, 127968757, 639843785]

約数ペア:

[(1, 639843785), (5, 127968757), (7, 91406255), (23, 27819295), (35, 18281251), (115, 5563859), (161, 3974185), (211, 3032435), (805, 794837), (1055, 606487), (1477, 433205), (3767, 169855), (4853, 131845), (7385, 86641), (18835, 33971), (24265, 26369)]