21227180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4297}}^1$

素因数の和:4338

約数の個数: 48

約数和(自身を含む): 50544480

約数和(自身を除く): 29317300

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4297, 4940, 8594, 17188, 21485, 42970, 55861, 81643, 85940, 111722, 163286, 223444, 279305, 326572, 408215, 558610, 816430, 1061359, 1117220, 1632860, 2122718, 4245436, 5306795, 10613590, 21227180]

約数ペア:

[(1, 21227180), (2, 10613590), (4, 5306795), (5, 4245436), (10, 2122718), (13, 1632860), (19, 1117220), (20, 1061359), (26, 816430), (38, 558610), (52, 408215), (65, 326572), (76, 279305), (95, 223444), (130, 163286), (190, 111722), (247, 85940), (260, 81643), (380, 55861), (494, 42970), (988, 21485), (1235, 17188), (2470, 8594), (4297, 4940)]