19868716

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 43953840

約数和(自身を除く): 24085124

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 49, 67, 68, 89, 98, 119, 134, 178, 196, 238, 268, 356, 469, 476, 623, 833, 938, 1139, 1246, 1513, 1666, 1876, 2278, 2492, 3026, 3283, 3332, 4361, 4556, 5963, 6052, 6566, 7973, 8722, 10591, 11926, 13132, 15946, 17444, 21182, 23852, 31892, 41741, 42364, 55811, 74137, 83482, 101371, 111622, 148274, 166964, 202742, 223244, 292187, 296548, 405484, 584374, 709597, 1168748, 1419194, 2838388, 4967179, 9934358, 19868716]

約数ペア:

[(1, 19868716), (2, 9934358), (4, 4967179), (7, 2838388), (14, 1419194), (17, 1168748), (28, 709597), (34, 584374), (49, 405484), (67, 296548), (68, 292187), (89, 223244), (98, 202742), (119, 166964), (134, 148274), (178, 111622), (196, 101371), (238, 83482), (268, 74137), (356, 55811), (469, 42364), (476, 41741), (623, 31892), (833, 23852), (938, 21182), (1139, 17444), (1246, 15946), (1513, 13132), (1666, 11926), (1876, 10591), (2278, 8722), (2492, 7973), (3026, 6566), (3283, 6052), (3332, 5963), (4361, 4556)]