18400400

素因数分解:

$2^4\times 5^2\times {\mathrm{157}}^1\times {\mathrm{293}}^1$

素因数の和:468

約数の個数: 60

約数和(自身を含む): 44640372

約数和(自身を除く): 26239972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 157, 200, 293, 314, 400, 586, 628, 785, 1172, 1256, 1465, 1570, 2344, 2512, 2930, 3140, 3925, 4688, 5860, 6280, 7325, 7850, 11720, 12560, 14650, 15700, 23440, 29300, 31400, 46001, 58600, 62800, 92002, 117200, 184004, 230005, 368008, 460010, 736016, 920020, 1150025, 1840040, 2300050, 3680080, 4600100, 9200200, 18400400]

約数ペア:

[(1, 18400400), (2, 9200200), (4, 4600100), (5, 3680080), (8, 2300050), (10, 1840040), (16, 1150025), (20, 920020), (25, 736016), (40, 460010), (50, 368008), (80, 230005), (100, 184004), (157, 117200), (200, 92002), (293, 62800), (314, 58600), (400, 46001), (586, 31400), (628, 29300), (785, 23440), (1172, 15700), (1256, 14650), (1465, 12560), (1570, 11720), (2344, 7850), (2512, 7325), (2930, 6280), (3140, 5860), (3925, 4688)]