18808010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:423

約数の個数: 48

約数和(自身を含む): 37946880

約数和(自身を除く): 19138870

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 169, 310, 338, 359, 403, 718, 806, 845, 1690, 1795, 2015, 3590, 4030, 4667, 5239, 9334, 10478, 11129, 22258, 23335, 26195, 46670, 52390, 55645, 60671, 111290, 121342, 144677, 289354, 303355, 606710, 723385, 1446770, 1880801, 3761602, 9404005, 18808010]

約数ペア:

[(1, 18808010), (2, 9404005), (5, 3761602), (10, 1880801), (13, 1446770), (26, 723385), (31, 606710), (62, 303355), (65, 289354), (130, 144677), (155, 121342), (169, 111290), (310, 60671), (338, 55645), (359, 52390), (403, 46670), (718, 26195), (806, 23335), (845, 22258), (1690, 11129), (1795, 10478), (2015, 9334), (3590, 5239), (4030, 4667)]