664860028

素因数分解:

$2^2\times 7^2\times {\mathrm{67}}^1\times {\mathrm{197}}^1\times {\mathrm{257}}^1$

素因数の和:539

約数の個数: 72

約数和(自身を含む): 1386011088

約数和(自身を除く): 721151060

約数列:

[1, 2, 4, 7, 14, 28, 49, 67, 98, 134, 196, 197, 257, 268, 394, 469, 514, 788, 938, 1028, 1379, 1799, 1876, 2758, 3283, 3598, 5516, 6566, 7196, 9653, 12593, 13132, 13199, 17219, 19306, 25186, 26398, 34438, 38612, 50372, 50629, 52796, 68876, 92393, 101258, 120533, 184786, 202516, 241066, 354403, 369572, 482132, 646751, 708806, 843731, 1293502, 1417612, 1687462, 2480821, 2587004, 3374924, 3392143, 4961642, 6784286, 9923284, 13568572, 23745001, 47490002, 94980004, 166215007, 332430014, 664860028]

約数ペア:

[(1, 664860028), (2, 332430014), (4, 166215007), (7, 94980004), (14, 47490002), (28, 23745001), (49, 13568572), (67, 9923284), (98, 6784286), (134, 4961642), (196, 3392143), (197, 3374924), (257, 2587004), (268, 2480821), (394, 1687462), (469, 1417612), (514, 1293502), (788, 843731), (938, 708806), (1028, 646751), (1379, 482132), (1799, 369572), (1876, 354403), (2758, 241066), (3283, 202516), (3598, 184786), (5516, 120533), (6566, 101258), (7196, 92393), (9653, 68876), (12593, 52796), (13132, 50629), (13199, 50372), (17219, 38612), (19306, 34438), (25186, 26398)]