261491968

素因数分解:

$2^8\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:627

約数の個数: 72

約数和(自身を含む): 551880000

約数和(自身を除く): 290388032

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 64, 89, 92, 128, 178, 184, 256, 356, 368, 499, 712, 736, 998, 1424, 1472, 1996, 2047, 2848, 2944, 3992, 4094, 5696, 5888, 7984, 8188, 11392, 11477, 15968, 16376, 22784, 22954, 31936, 32752, 44411, 45908, 63872, 65504, 88822, 91816, 127744, 131008, 177644, 183632, 262016, 355288, 367264, 524032, 710576, 734528, 1021453, 1421152, 1469056, 2042906, 2842304, 2938112, 4085812, 5684608, 8171624, 11369216, 16343248, 32686496, 65372992, 130745984, 261491968]

約数ペア:

[(1, 261491968), (2, 130745984), (4, 65372992), (8, 32686496), (16, 16343248), (23, 11369216), (32, 8171624), (46, 5684608), (64, 4085812), (89, 2938112), (92, 2842304), (128, 2042906), (178, 1469056), (184, 1421152), (256, 1021453), (356, 734528), (368, 710576), (499, 524032), (712, 367264), (736, 355288), (998, 262016), (1424, 183632), (1472, 177644), (1996, 131008), (2047, 127744), (2848, 91816), (2944, 88822), (3992, 65504), (4094, 63872), (5696, 45908), (5888, 44411), (7984, 32752), (8188, 31936), (11392, 22954), (11477, 22784), (15968, 16376)]