20284495

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:148

約数の個数: 64

約数和(自身を含む): 33177600

約数和(自身を除く): 12893105

約数列:

[1, 5, 7, 11, 19, 35, 47, 55, 59, 77, 95, 133, 209, 235, 295, 329, 385, 413, 517, 649, 665, 893, 1045, 1121, 1463, 1645, 2065, 2585, 2773, 3245, 3619, 4465, 4543, 5605, 6251, 7315, 7847, 9823, 12331, 13865, 18095, 19411, 22715, 30503, 31255, 39235, 49115, 52687, 61655, 68761, 86317, 97055, 152515, 213521, 263435, 343805, 368809, 431585, 579557, 1067605, 1844045, 2897785, 4056899, 20284495]

約数ペア:

[(1, 20284495), (5, 4056899), (7, 2897785), (11, 1844045), (19, 1067605), (35, 579557), (47, 431585), (55, 368809), (59, 343805), (77, 263435), (95, 213521), (133, 152515), (209, 97055), (235, 86317), (295, 68761), (329, 61655), (385, 52687), (413, 49115), (517, 39235), (649, 31255), (665, 30503), (893, 22715), (1045, 19411), (1121, 18095), (1463, 13865), (1645, 12331), (2065, 9823), (2585, 7847), (2773, 7315), (3245, 6251), (3619, 5605), (4465, 4543)]