664758871

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 888330240

約数和(自身を除く): 223571369

約数列:

[1, 7, 17, 19, 41, 71, 101, 119, 133, 287, 323, 497, 697, 707, 779, 1207, 1349, 1717, 1919, 2261, 2911, 4141, 4879, 5453, 7171, 8449, 9443, 12019, 13243, 13433, 20377, 22933, 28987, 32623, 49487, 50197, 55309, 70397, 78679, 92701, 121907, 136249, 160531, 228361, 294011, 346409, 387163, 492779, 550753, 853349, 940253, 953743, 1337543, 2058077, 2316233, 4998187, 5586209, 6581771, 9362801, 16213631, 34987309, 39103463, 94965553, 664758871]

約数ペア:

[(1, 664758871), (7, 94965553), (17, 39103463), (19, 34987309), (41, 16213631), (71, 9362801), (101, 6581771), (119, 5586209), (133, 4998187), (287, 2316233), (323, 2058077), (497, 1337543), (697, 953743), (707, 940253), (779, 853349), (1207, 550753), (1349, 492779), (1717, 387163), (1919, 346409), (2261, 294011), (2911, 228361), (4141, 160531), (4879, 136249), (5453, 121907), (7171, 92701), (8449, 78679), (9443, 70397), (12019, 55309), (13243, 50197), (13433, 49487), (20377, 32623), (22933, 28987)]