12581980

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{4007}}^1$

素因数の和:4173

約数の個数: 24

約数和(自身を含む): 26597088

約数和(自身を除く): 14015108

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 4007, 8014, 16028, 20035, 40070, 80140, 629099, 1258198, 2516396, 3145495, 6290990, 12581980]

約数ペア:

[(1, 12581980), (2, 6290990), (4, 3145495), (5, 2516396), (10, 1258198), (20, 629099), (157, 80140), (314, 40070), (628, 20035), (785, 16028), (1570, 8014), (3140, 4007)]