261314128

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{491}}^1$

素因数の和:596

約数の個数: 80

約数和(自身を含む): 556392960

約数和(自身を除く): 295078832

約数列:

[1, 2, 4, 8, 16, 29, 31, 37, 58, 62, 74, 116, 124, 148, 232, 248, 296, 464, 491, 496, 592, 899, 982, 1073, 1147, 1798, 1964, 2146, 2294, 3596, 3928, 4292, 4588, 7192, 7856, 8584, 9176, 14239, 14384, 15221, 17168, 18167, 18352, 28478, 30442, 33263, 36334, 56956, 60884, 66526, 72668, 113912, 121768, 133052, 145336, 227824, 243536, 266104, 290672, 441409, 526843, 532208, 563177, 882818, 1053686, 1126354, 1765636, 2107372, 2252708, 3531272, 4214744, 4505416, 7062544, 8429488, 9010832, 16332133, 32664266, 65328532, 130657064, 261314128]

約数ペア:

[(1, 261314128), (2, 130657064), (4, 65328532), (8, 32664266), (16, 16332133), (29, 9010832), (31, 8429488), (37, 7062544), (58, 4505416), (62, 4214744), (74, 3531272), (116, 2252708), (124, 2107372), (148, 1765636), (232, 1126354), (248, 1053686), (296, 882818), (464, 563177), (491, 532208), (496, 526843), (592, 441409), (899, 290672), (982, 266104), (1073, 243536), (1147, 227824), (1798, 145336), (1964, 133052), (2146, 121768), (2294, 113912), (3596, 72668), (3928, 66526), (4292, 60884), (4588, 56956), (7192, 36334), (7856, 33263), (8584, 30442), (9176, 28478), (14239, 18352), (14384, 18167), (15221, 17168)]