78667990

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1\times {\mathrm{563}}^1$

素因数の和:816

約数の個数: 32

約数和(自身を含む): 144361440

約数和(自身を除く): 65693450

約数列:

[1, 2, 5, 10, 89, 157, 178, 314, 445, 563, 785, 890, 1126, 1570, 2815, 5630, 13973, 27946, 50107, 69865, 88391, 100214, 139730, 176782, 250535, 441955, 501070, 883910, 7866799, 15733598, 39333995, 78667990]

約数ペア:

[(1, 78667990), (2, 39333995), (5, 15733598), (10, 7866799), (89, 883910), (157, 501070), (178, 441955), (314, 250535), (445, 176782), (563, 139730), (785, 100214), (890, 88391), (1126, 69865), (1570, 50107), (2815, 27946), (5630, 13973)]