256651278

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:282

約数の個数: 128

約数和(自身を含む): 629959680

約数和(自身を除く): 373308402

約数列:

[1, 2, 3, 6, 13, 17, 19, 26, 34, 38, 39, 51, 57, 61, 78, 102, 114, 122, 167, 183, 221, 247, 323, 334, 366, 442, 494, 501, 646, 663, 741, 793, 969, 1002, 1037, 1159, 1326, 1482, 1586, 1938, 2074, 2171, 2318, 2379, 2839, 3111, 3173, 3477, 4199, 4342, 4758, 5678, 6222, 6346, 6513, 6954, 8398, 8517, 9519, 10187, 12597, 13026, 13481, 15067, 17034, 19038, 19703, 20374, 25194, 26962, 30134, 30561, 36907, 39406, 40443, 41249, 45201, 53941, 59109, 61122, 73814, 80886, 82498, 90402, 107882, 110721, 118218, 123747, 132431, 161823, 173179, 193553, 221442, 247494, 256139, 264862, 323646, 346358, 387106, 397293, 512278, 519537, 580659, 701233, 768417, 794586, 1039074, 1161318, 1402466, 1536834, 2103699, 2251327, 2516189, 3290401, 4207398, 4502654, 5032378, 6580802, 6753981, 7548567, 9871203, 13507962, 15097134, 19742406, 42775213, 85550426, 128325639, 256651278]

約数ペア:

[(1, 256651278), (2, 128325639), (3, 85550426), (6, 42775213), (13, 19742406), (17, 15097134), (19, 13507962), (26, 9871203), (34, 7548567), (38, 6753981), (39, 6580802), (51, 5032378), (57, 4502654), (61, 4207398), (78, 3290401), (102, 2516189), (114, 2251327), (122, 2103699), (167, 1536834), (183, 1402466), (221, 1161318), (247, 1039074), (323, 794586), (334, 768417), (366, 701233), (442, 580659), (494, 519537), (501, 512278), (646, 397293), (663, 387106), (741, 346358), (793, 323646), (969, 264862), (1002, 256139), (1037, 247494), (1159, 221442), (1326, 193553), (1482, 173179), (1586, 161823), (1938, 132431), (2074, 123747), (2171, 118218), (2318, 110721), (2379, 107882), (2839, 90402), (3111, 82498), (3173, 80886), (3477, 73814), (4199, 61122), (4342, 59109), (4758, 53941), (5678, 45201), (6222, 41249), (6346, 40443), (6513, 39406), (6954, 36907), (8398, 30561), (8517, 30134), (9519, 26962), (10187, 25194), (12597, 20374), (13026, 19703), (13481, 19038), (15067, 17034)]