80537990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{4457}}^1$

素因数の和:4616

約数の個数: 32

約数和(自身を含む): 157278240

約数和(自身を除く): 76740250

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 139, 278, 695, 1390, 1807, 3614, 4457, 8914, 9035, 18070, 22285, 44570, 57941, 115882, 289705, 579410, 619523, 1239046, 3097615, 6195230, 8053799, 16107598, 40268995, 80537990]

約数ペア:

[(1, 80537990), (2, 40268995), (5, 16107598), (10, 8053799), (13, 6195230), (26, 3097615), (65, 1239046), (130, 619523), (139, 579410), (278, 289705), (695, 115882), (1390, 57941), (1807, 44570), (3614, 22285), (4457, 18070), (8914, 9035)]