65812840

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{2543}}^1$

素因数の和:3201

約数の個数: 32

約数和(自身を含む): 148366080

約数和(自身を除く): 82553240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2543, 2588, 3235, 5086, 5176, 6470, 10172, 12715, 12940, 20344, 25430, 25880, 50860, 101720, 1645321, 3290642, 6581284, 8226605, 13162568, 16453210, 32906420, 65812840]

約数ペア:

[(1, 65812840), (2, 32906420), (4, 16453210), (5, 13162568), (8, 8226605), (10, 6581284), (20, 3290642), (40, 1645321), (647, 101720), (1294, 50860), (2543, 25880), (2588, 25430), (3235, 20344), (5086, 12940), (5176, 12715), (6470, 10172)]