19969458

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 45048960

約数和(自身を除く): 25079502

約数列:

[1, 2, 3, 6, 17, 29, 34, 43, 51, 58, 86, 87, 102, 129, 157, 174, 258, 314, 471, 493, 731, 942, 986, 1247, 1462, 1479, 2193, 2494, 2669, 2958, 3741, 4386, 4553, 5338, 6751, 7482, 8007, 9106, 13502, 13659, 16014, 20253, 21199, 27318, 40506, 42398, 63597, 77401, 114767, 127194, 154802, 195779, 229534, 232203, 344301, 391558, 464406, 587337, 688602, 1174674, 3328243, 6656486, 9984729, 19969458]

約数ペア:

[(1, 19969458), (2, 9984729), (3, 6656486), (6, 3328243), (17, 1174674), (29, 688602), (34, 587337), (43, 464406), (51, 391558), (58, 344301), (86, 232203), (87, 229534), (102, 195779), (129, 154802), (157, 127194), (174, 114767), (258, 77401), (314, 63597), (471, 42398), (493, 40506), (731, 27318), (942, 21199), (986, 20253), (1247, 16014), (1462, 13659), (1479, 13502), (2193, 9106), (2494, 8007), (2669, 7482), (2958, 6751), (3741, 5338), (4386, 4553)]