18557240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{281}}^1$

素因数の和:432

約数の個数: 64

約数和(自身を含む): 45480960

約数和(自身を除く): 26923720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 127, 130, 254, 260, 281, 508, 520, 562, 635, 1016, 1124, 1270, 1405, 1651, 2248, 2540, 2810, 3302, 3653, 5080, 5620, 6604, 7306, 8255, 11240, 13208, 14612, 16510, 18265, 29224, 33020, 35687, 36530, 66040, 71374, 73060, 142748, 146120, 178435, 285496, 356870, 463931, 713740, 927862, 1427480, 1855724, 2319655, 3711448, 4639310, 9278620, 18557240]

約数ペア:

[(1, 18557240), (2, 9278620), (4, 4639310), (5, 3711448), (8, 2319655), (10, 1855724), (13, 1427480), (20, 927862), (26, 713740), (40, 463931), (52, 356870), (65, 285496), (104, 178435), (127, 146120), (130, 142748), (254, 73060), (260, 71374), (281, 66040), (508, 36530), (520, 35687), (562, 33020), (635, 29224), (1016, 18265), (1124, 16510), (1270, 14612), (1405, 13208), (1651, 11240), (2248, 8255), (2540, 7306), (2810, 6604), (3302, 5620), (3653, 5080)]