65017880

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:468

約数の個数: 64

約数和(自身を含む): 151683840

約数和(自身を除く): 86665960

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 197, 223, 296, 370, 394, 446, 740, 788, 892, 985, 1115, 1480, 1576, 1784, 1970, 2230, 3940, 4460, 7289, 7880, 8251, 8920, 14578, 16502, 29156, 33004, 36445, 41255, 43931, 58312, 66008, 72890, 82510, 87862, 145780, 165020, 175724, 219655, 291560, 330040, 351448, 439310, 878620, 1625447, 1757240, 3250894, 6501788, 8127235, 13003576, 16254470, 32508940, 65017880]

約数ペア:

[(1, 65017880), (2, 32508940), (4, 16254470), (5, 13003576), (8, 8127235), (10, 6501788), (20, 3250894), (37, 1757240), (40, 1625447), (74, 878620), (148, 439310), (185, 351448), (197, 330040), (223, 291560), (296, 219655), (370, 175724), (394, 165020), (446, 145780), (740, 87862), (788, 82510), (892, 72890), (985, 66008), (1115, 58312), (1480, 43931), (1576, 41255), (1784, 36445), (1970, 33004), (2230, 29156), (3940, 16502), (4460, 14578), (7289, 8920), (7880, 8251)]