21175812

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4943}}^1$

素因数の和:4977

約数の個数: 72

約数和(自身を含む): 64786176

約数和(自身を除く): 43610364

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 28, 34, 36, 42, 51, 63, 68, 84, 102, 119, 126, 153, 204, 238, 252, 306, 357, 476, 612, 714, 1071, 1428, 2142, 4284, 4943, 9886, 14829, 19772, 29658, 34601, 44487, 59316, 69202, 84031, 88974, 103803, 138404, 168062, 177948, 207606, 252093, 311409, 336124, 415212, 504186, 588217, 622818, 756279, 1008372, 1176434, 1245636, 1512558, 1764651, 2352868, 3025116, 3529302, 5293953, 7058604, 10587906, 21175812]

約数ペア:

[(1, 21175812), (2, 10587906), (3, 7058604), (4, 5293953), (6, 3529302), (7, 3025116), (9, 2352868), (12, 1764651), (14, 1512558), (17, 1245636), (18, 1176434), (21, 1008372), (28, 756279), (34, 622818), (36, 588217), (42, 504186), (51, 415212), (63, 336124), (68, 311409), (84, 252093), (102, 207606), (119, 177948), (126, 168062), (153, 138404), (204, 103803), (238, 88974), (252, 84031), (306, 69202), (357, 59316), (476, 44487), (612, 34601), (714, 29658), (1071, 19772), (1428, 14829), (2142, 9886), (4284, 4943)]