19428156

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{691}}^1$

素因数の和:783

約数の個数: 72

約数和(自身を含む): 54407808

約数和(自身を除く): 34979652

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 71, 99, 132, 142, 198, 213, 284, 396, 426, 639, 691, 781, 852, 1278, 1382, 1562, 2073, 2343, 2556, 2764, 3124, 4146, 4686, 6219, 7029, 7601, 8292, 9372, 12438, 14058, 15202, 22803, 24876, 28116, 30404, 45606, 49061, 68409, 91212, 98122, 136818, 147183, 196244, 273636, 294366, 441549, 539671, 588732, 883098, 1079342, 1619013, 1766196, 2158684, 3238026, 4857039, 6476052, 9714078, 19428156]

約数ペア:

[(1, 19428156), (2, 9714078), (3, 6476052), (4, 4857039), (6, 3238026), (9, 2158684), (11, 1766196), (12, 1619013), (18, 1079342), (22, 883098), (33, 588732), (36, 539671), (44, 441549), (66, 294366), (71, 273636), (99, 196244), (132, 147183), (142, 136818), (198, 98122), (213, 91212), (284, 68409), (396, 49061), (426, 45606), (639, 30404), (691, 28116), (781, 24876), (852, 22803), (1278, 15202), (1382, 14058), (1562, 12438), (2073, 9372), (2343, 8292), (2556, 7601), (2764, 7029), (3124, 6219), (4146, 4686)]