18291720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{313}}^1\times {\mathrm{487}}^1$

素因数の和:814

約数の個数: 64

約数和(自身を含む): 55163520

約数和(自身を除く): 36871800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 313, 487, 626, 939, 974, 1252, 1461, 1565, 1878, 1948, 2435, 2504, 2922, 3130, 3756, 3896, 4695, 4870, 5844, 6260, 7305, 7512, 9390, 9740, 11688, 12520, 14610, 18780, 19480, 29220, 37560, 58440, 152431, 304862, 457293, 609724, 762155, 914586, 1219448, 1524310, 1829172, 2286465, 3048620, 3658344, 4572930, 6097240, 9145860, 18291720]

約数ペア:

[(1, 18291720), (2, 9145860), (3, 6097240), (4, 4572930), (5, 3658344), (6, 3048620), (8, 2286465), (10, 1829172), (12, 1524310), (15, 1219448), (20, 914586), (24, 762155), (30, 609724), (40, 457293), (60, 304862), (120, 152431), (313, 58440), (487, 37560), (626, 29220), (939, 19480), (974, 18780), (1252, 14610), (1461, 12520), (1565, 11688), (1878, 9740), (1948, 9390), (2435, 7512), (2504, 7305), (2922, 6260), (3130, 5844), (3756, 4870), (3896, 4695)]