259546880

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^2\times {\mathrm{211}}^1$

素因数の和:294

約数の個数: 108

約数和(自身を含む): 645442056

約数和(自身を除く): 385895176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 211, 248, 256, 310, 320, 422, 496, 620, 640, 844, 961, 992, 1055, 1240, 1280, 1688, 1922, 1984, 2110, 2480, 3376, 3844, 3968, 4220, 4805, 4960, 6541, 6752, 7688, 7936, 8440, 9610, 9920, 13082, 13504, 15376, 16880, 19220, 19840, 26164, 27008, 30752, 32705, 33760, 38440, 39680, 52328, 54016, 61504, 65410, 67520, 76880, 104656, 123008, 130820, 135040, 153760, 202771, 209312, 246016, 261640, 270080, 307520, 405542, 418624, 523280, 615040, 811084, 837248, 1013855, 1046560, 1230080, 1622168, 1674496, 2027710, 2093120, 3244336, 4055420, 4186240, 6488672, 8110840, 8372480, 12977344, 16221680, 25954688, 32443360, 51909376, 64886720, 129773440, 259546880]

約数ペア:

[(1, 259546880), (2, 129773440), (4, 64886720), (5, 51909376), (8, 32443360), (10, 25954688), (16, 16221680), (20, 12977344), (31, 8372480), (32, 8110840), (40, 6488672), (62, 4186240), (64, 4055420), (80, 3244336), (124, 2093120), (128, 2027710), (155, 1674496), (160, 1622168), (211, 1230080), (248, 1046560), (256, 1013855), (310, 837248), (320, 811084), (422, 615040), (496, 523280), (620, 418624), (640, 405542), (844, 307520), (961, 270080), (992, 261640), (1055, 246016), (1240, 209312), (1280, 202771), (1688, 153760), (1922, 135040), (1984, 130820), (2110, 123008), (2480, 104656), (3376, 76880), (3844, 67520), (3968, 65410), (4220, 61504), (4805, 54016), (4960, 52328), (6541, 39680), (6752, 38440), (7688, 33760), (7936, 32705), (8440, 30752), (9610, 27008), (9920, 26164), (13082, 19840), (13504, 19220), (15376, 16880)]