18978156

素因数分解:

$2^2\times 3^2\times {\mathrm{317}}^1\times {\mathrm{1663}}^1$

素因数の和:1990

約数の個数: 36

約数和(自身を含む): 48152832

約数和(自身を除く): 29174676

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 317, 634, 951, 1268, 1663, 1902, 2853, 3326, 3804, 4989, 5706, 6652, 9978, 11412, 14967, 19956, 29934, 59868, 527171, 1054342, 1581513, 2108684, 3163026, 4744539, 6326052, 9489078, 18978156]

約数ペア:

[(1, 18978156), (2, 9489078), (3, 6326052), (4, 4744539), (6, 3163026), (9, 2108684), (12, 1581513), (18, 1054342), (36, 527171), (317, 59868), (634, 29934), (951, 19956), (1268, 14967), (1663, 11412), (1902, 9978), (2853, 6652), (3326, 5706), (3804, 4989)]