21145586

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 43110144

約数和(自身を除く): 21964558

約数列:

[1, 2, 7, 11, 14, 17, 22, 34, 41, 77, 82, 119, 154, 187, 197, 238, 287, 374, 394, 451, 574, 697, 902, 1309, 1379, 1394, 2167, 2618, 2758, 3157, 3349, 4334, 4879, 6314, 6698, 7667, 8077, 9758, 15169, 15334, 16154, 23443, 30338, 36839, 46886, 53669, 56539, 73678, 88847, 107338, 113078, 137309, 177694, 257873, 274618, 515746, 621929, 961163, 1243858, 1510399, 1922326, 3020798, 10572793, 21145586]

約数ペア:

[(1, 21145586), (2, 10572793), (7, 3020798), (11, 1922326), (14, 1510399), (17, 1243858), (22, 961163), (34, 621929), (41, 515746), (77, 274618), (82, 257873), (119, 177694), (154, 137309), (187, 113078), (197, 107338), (238, 88847), (287, 73678), (374, 56539), (394, 53669), (451, 46886), (574, 36839), (697, 30338), (902, 23443), (1309, 16154), (1379, 15334), (1394, 15169), (2167, 9758), (2618, 8077), (2758, 7667), (3157, 6698), (3349, 6314), (4334, 4879)]