19958235

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:188

約数の個数: 64

約数和(自身を含む): 37255680

約数和(自身を除く): 17297445

約数列:

[1, 3, 5, 11, 15, 29, 33, 43, 55, 87, 97, 129, 145, 165, 215, 291, 319, 435, 473, 485, 645, 957, 1067, 1247, 1419, 1455, 1595, 2365, 2813, 3201, 3741, 4171, 4785, 5335, 6235, 7095, 8439, 12513, 13717, 14065, 16005, 18705, 20855, 30943, 41151, 42195, 45881, 62565, 68585, 92829, 120959, 137643, 154715, 205755, 229405, 362877, 464145, 604795, 688215, 1330549, 1814385, 3991647, 6652745, 19958235]

約数ペア:

[(1, 19958235), (3, 6652745), (5, 3991647), (11, 1814385), (15, 1330549), (29, 688215), (33, 604795), (43, 464145), (55, 362877), (87, 229405), (97, 205755), (129, 154715), (145, 137643), (165, 120959), (215, 92829), (291, 68585), (319, 62565), (435, 45881), (473, 42195), (485, 41151), (645, 30943), (957, 20855), (1067, 18705), (1247, 16005), (1419, 14065), (1455, 13717), (1595, 12513), (2365, 8439), (2813, 7095), (3201, 6235), (3741, 5335), (4171, 4785)]