187555820

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{197}}^1\times {\mathrm{263}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 399567168

約数和(自身を除く): 212011348

約数列:

[1, 2, 4, 5, 10, 20, 181, 197, 263, 362, 394, 526, 724, 788, 905, 985, 1052, 1315, 1810, 1970, 2630, 3620, 3940, 5260, 35657, 47603, 51811, 71314, 95206, 103622, 142628, 178285, 190412, 207244, 238015, 259055, 356570, 476030, 518110, 713140, 952060, 1036220, 9377791, 18755582, 37511164, 46888955, 93777910, 187555820]

約数ペア:

[(1, 187555820), (2, 93777910), (4, 46888955), (5, 37511164), (10, 18755582), (20, 9377791), (181, 1036220), (197, 952060), (263, 713140), (362, 518110), (394, 476030), (526, 356570), (724, 259055), (788, 238015), (905, 207244), (985, 190412), (1052, 178285), (1315, 142628), (1810, 103622), (1970, 95206), (2630, 71314), (3620, 51811), (3940, 47603), (5260, 35657)]