639991996

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{5923}}^1$

素因数の和:6178

約数の個数: 48

約数和(自身を含む): 1361477376

約数和(自身を除く): 721485380

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 227, 238, 454, 476, 908, 1589, 3178, 3859, 5923, 6356, 7718, 11846, 15436, 23692, 27013, 41461, 54026, 82922, 100691, 108052, 165844, 201382, 402764, 704837, 1344521, 1409674, 2689042, 2819348, 5378084, 9411647, 18823294, 22856857, 37646588, 45713714, 91427428, 159997999, 319995998, 639991996]

約数ペア:

[(1, 639991996), (2, 319995998), (4, 159997999), (7, 91427428), (14, 45713714), (17, 37646588), (28, 22856857), (34, 18823294), (68, 9411647), (119, 5378084), (227, 2819348), (238, 2689042), (454, 1409674), (476, 1344521), (908, 704837), (1589, 402764), (3178, 201382), (3859, 165844), (5923, 108052), (6356, 100691), (7718, 82922), (11846, 54026), (15436, 41461), (23692, 27013)]