638049279

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1\times {\mathrm{277}}^1$

素因数の和:580

約数の個数: 64

約数和(自身を含む): 1076060160

約数和(自身を除く): 438010881

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 251, 277, 399, 437, 483, 753, 831, 1311, 1757, 1939, 3059, 4769, 5263, 5271, 5773, 5817, 6371, 9177, 14307, 15789, 17319, 19113, 33383, 36841, 40411, 44597, 69527, 100149, 109687, 110523, 121049, 121233, 133791, 208581, 329061, 363147, 486689, 767809, 847343, 1321013, 1460067, 1599121, 2303427, 2542029, 3963039, 4797363, 9247091, 11193847, 27741273, 30383299, 33581541, 91149897, 212683093, 638049279]

約数ペア:

[(1, 638049279), (3, 212683093), (7, 91149897), (19, 33581541), (21, 30383299), (23, 27741273), (57, 11193847), (69, 9247091), (133, 4797363), (161, 3963039), (251, 2542029), (277, 2303427), (399, 1599121), (437, 1460067), (483, 1321013), (753, 847343), (831, 767809), (1311, 486689), (1757, 363147), (1939, 329061), (3059, 208581), (4769, 133791), (5263, 121233), (5271, 121049), (5773, 110523), (5817, 109687), (6371, 100149), (9177, 69527), (14307, 44597), (15789, 40411), (17319, 36841), (19113, 33383)]