258979994

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{823}}^1$

素因数の和:884

約数の個数: 72

約数和(自身を含む): 515708640

約数和(自身を除く): 256728646

約数列:

[1, 2, 7, 13, 14, 19, 26, 38, 49, 91, 98, 133, 169, 182, 247, 266, 338, 494, 637, 823, 931, 1183, 1274, 1646, 1729, 1862, 2366, 3211, 3458, 5761, 6422, 8281, 10699, 11522, 12103, 15637, 16562, 21398, 22477, 24206, 31274, 40327, 44954, 74893, 80654, 109459, 139087, 149786, 157339, 203281, 218918, 278174, 314678, 406562, 524251, 766213, 973609, 1048502, 1422967, 1532426, 1947218, 2642653, 2845934, 5285306, 6815263, 9960769, 13630526, 18498571, 19921538, 36997142, 129489997, 258979994]

約数ペア:

[(1, 258979994), (2, 129489997), (7, 36997142), (13, 19921538), (14, 18498571), (19, 13630526), (26, 9960769), (38, 6815263), (49, 5285306), (91, 2845934), (98, 2642653), (133, 1947218), (169, 1532426), (182, 1422967), (247, 1048502), (266, 973609), (338, 766213), (494, 524251), (637, 406562), (823, 314678), (931, 278174), (1183, 218918), (1274, 203281), (1646, 157339), (1729, 149786), (1862, 139087), (2366, 109459), (3211, 80654), (3458, 74893), (5761, 44954), (6422, 40327), (8281, 31274), (10699, 24206), (11522, 22477), (12103, 21398), (15637, 16562)]