261078076

素因数分解:

$2^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{257}}^1$

素因数の和:419

約数の個数: 72

約数和(自身を含む): 548474976

約数和(自身を除く): 287396900

約数列:

[1, 2, 4, 7, 14, 28, 49, 71, 73, 98, 142, 146, 196, 257, 284, 292, 497, 511, 514, 994, 1022, 1028, 1799, 1988, 2044, 3479, 3577, 3598, 5183, 6958, 7154, 7196, 10366, 12593, 13916, 14308, 18247, 18761, 20732, 25186, 36281, 36494, 37522, 50372, 72562, 72988, 75044, 127729, 131327, 145124, 253967, 255458, 262654, 507934, 510916, 525308, 894103, 919289, 1015868, 1332031, 1788206, 1838578, 2664062, 3576412, 3677156, 5328124, 9324217, 18648434, 37296868, 65269519, 130539038, 261078076]

約数ペア:

[(1, 261078076), (2, 130539038), (4, 65269519), (7, 37296868), (14, 18648434), (28, 9324217), (49, 5328124), (71, 3677156), (73, 3576412), (98, 2664062), (142, 1838578), (146, 1788206), (196, 1332031), (257, 1015868), (284, 919289), (292, 894103), (497, 525308), (511, 510916), (514, 507934), (994, 262654), (1022, 255458), (1028, 253967), (1799, 145124), (1988, 131327), (2044, 127729), (3479, 75044), (3577, 72988), (3598, 72562), (5183, 50372), (6958, 37522), (7154, 36494), (7196, 36281), (10366, 25186), (12593, 20732), (13916, 18761), (14308, 18247)]