18993860

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:452

約数の個数: 48

約数和(自身を含む): 42045696

約数和(自身を除く): 23051836

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 157, 230, 263, 314, 460, 526, 628, 785, 1052, 1315, 1570, 2630, 3140, 3611, 5260, 6049, 7222, 12098, 14444, 18055, 24196, 30245, 36110, 41291, 60490, 72220, 82582, 120980, 165164, 206455, 412910, 825820, 949693, 1899386, 3798772, 4748465, 9496930, 18993860]

約数ペア:

[(1, 18993860), (2, 9496930), (4, 4748465), (5, 3798772), (10, 1899386), (20, 949693), (23, 825820), (46, 412910), (92, 206455), (115, 165164), (157, 120980), (230, 82582), (263, 72220), (314, 60490), (460, 41291), (526, 36110), (628, 30245), (785, 24196), (1052, 18055), (1315, 14444), (1570, 12098), (2630, 7222), (3140, 6049), (3611, 5260)]