65502280

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{2531}}^1$

素因数の和:3189

約数の個数: 32

約数和(自身を含む): 147666240

約数和(自身を除く): 82163960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2531, 2588, 3235, 5062, 5176, 6470, 10124, 12655, 12940, 20248, 25310, 25880, 50620, 101240, 1637557, 3275114, 6550228, 8187785, 13100456, 16375570, 32751140, 65502280]

約数ペア:

[(1, 65502280), (2, 32751140), (4, 16375570), (5, 13100456), (8, 8187785), (10, 6550228), (20, 3275114), (40, 1637557), (647, 101240), (1294, 50620), (2531, 25880), (2588, 25310), (3235, 20248), (5062, 12940), (5176, 12655), (6470, 10124)]