19866440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{277}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 49239360

約数和(自身を除く): 29372920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 163, 220, 277, 326, 440, 554, 652, 815, 1108, 1304, 1385, 1630, 1793, 2216, 2770, 3047, 3260, 3586, 5540, 6094, 6520, 7172, 8965, 11080, 12188, 14344, 15235, 17930, 24376, 30470, 35860, 45151, 60940, 71720, 90302, 121880, 180604, 225755, 361208, 451510, 496661, 903020, 993322, 1806040, 1986644, 2483305, 3973288, 4966610, 9933220, 19866440]

約数ペア:

[(1, 19866440), (2, 9933220), (4, 4966610), (5, 3973288), (8, 2483305), (10, 1986644), (11, 1806040), (20, 993322), (22, 903020), (40, 496661), (44, 451510), (55, 361208), (88, 225755), (110, 180604), (163, 121880), (220, 90302), (277, 71720), (326, 60940), (440, 45151), (554, 35860), (652, 30470), (815, 24376), (1108, 17930), (1304, 15235), (1385, 14344), (1630, 12188), (1793, 11080), (2216, 8965), (2770, 7172), (3047, 6520), (3260, 6094), (3586, 5540)]