21075684

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{491}}^1$

素因数の和:585

約数の個数: 72

約数和(自身を含む): 58107168

約数和(自身を除く): 37031484

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 73, 84, 98, 146, 147, 196, 219, 292, 294, 438, 491, 511, 588, 876, 982, 1022, 1473, 1533, 1964, 2044, 2946, 3066, 3437, 3577, 5892, 6132, 6874, 7154, 10311, 10731, 13748, 14308, 20622, 21462, 24059, 35843, 41244, 42924, 48118, 71686, 72177, 96236, 107529, 143372, 144354, 215058, 250901, 288708, 430116, 501802, 752703, 1003604, 1505406, 1756307, 3010812, 3512614, 5268921, 7025228, 10537842, 21075684]

約数ペア:

[(1, 21075684), (2, 10537842), (3, 7025228), (4, 5268921), (6, 3512614), (7, 3010812), (12, 1756307), (14, 1505406), (21, 1003604), (28, 752703), (42, 501802), (49, 430116), (73, 288708), (84, 250901), (98, 215058), (146, 144354), (147, 143372), (196, 107529), (219, 96236), (292, 72177), (294, 71686), (438, 48118), (491, 42924), (511, 41244), (588, 35843), (876, 24059), (982, 21462), (1022, 20622), (1473, 14308), (1533, 13748), (1964, 10731), (2044, 10311), (2946, 7154), (3066, 6874), (3437, 6132), (3577, 5892)]