21178836

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{229}}^1\times {\mathrm{367}}^1$

素因数の和:613

約数の個数: 72

約数和(自身を含む): 61617920

約数和(自身を除く): 40439084

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 229, 252, 367, 458, 687, 734, 916, 1101, 1374, 1468, 1603, 2061, 2202, 2569, 2748, 3206, 3303, 4122, 4404, 4809, 5138, 6412, 6606, 7707, 8244, 9618, 10276, 13212, 14427, 15414, 19236, 23121, 28854, 30828, 46242, 57708, 84043, 92484, 168086, 252129, 336172, 504258, 588301, 756387, 1008516, 1176602, 1512774, 1764903, 2353204, 3025548, 3529806, 5294709, 7059612, 10589418, 21178836]

約数ペア:

[(1, 21178836), (2, 10589418), (3, 7059612), (4, 5294709), (6, 3529806), (7, 3025548), (9, 2353204), (12, 1764903), (14, 1512774), (18, 1176602), (21, 1008516), (28, 756387), (36, 588301), (42, 504258), (63, 336172), (84, 252129), (126, 168086), (229, 92484), (252, 84043), (367, 57708), (458, 46242), (687, 30828), (734, 28854), (916, 23121), (1101, 19236), (1374, 15414), (1468, 14427), (1603, 13212), (2061, 10276), (2202, 9618), (2569, 8244), (2748, 7707), (3206, 6606), (3303, 6412), (4122, 5138), (4404, 4809)]