18662220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{521}}^1$

素因数の和:735

約数の個数: 72

約数和(自身を含む): 57002400

約数和(自身を除く): 38340180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 199, 398, 521, 597, 796, 995, 1042, 1194, 1563, 1791, 1990, 2084, 2388, 2605, 2985, 3126, 3582, 3980, 4689, 5210, 5970, 6252, 7164, 7815, 8955, 9378, 10420, 11940, 15630, 17910, 18756, 23445, 31260, 35820, 46890, 93780, 103679, 207358, 311037, 414716, 518395, 622074, 933111, 1036790, 1244148, 1555185, 1866222, 2073580, 3110370, 3732444, 4665555, 6220740, 9331110, 18662220]

約数ペア:

[(1, 18662220), (2, 9331110), (3, 6220740), (4, 4665555), (5, 3732444), (6, 3110370), (9, 2073580), (10, 1866222), (12, 1555185), (15, 1244148), (18, 1036790), (20, 933111), (30, 622074), (36, 518395), (45, 414716), (60, 311037), (90, 207358), (180, 103679), (199, 93780), (398, 46890), (521, 35820), (597, 31260), (796, 23445), (995, 18756), (1042, 17910), (1194, 15630), (1563, 11940), (1791, 10420), (1990, 9378), (2084, 8955), (2388, 7815), (2605, 7164), (2985, 6252), (3126, 5970), (3582, 5210), (3980, 4689)]