204788480

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:462

約数の個数: 144

約数和(自身を含む): 546680064

約数和(自身を除く): 341891584

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 256, 260, 310, 320, 397, 403, 416, 496, 520, 620, 640, 794, 806, 832, 992, 1040, 1240, 1280, 1588, 1612, 1664, 1984, 1985, 2015, 2080, 2480, 3176, 3224, 3328, 3968, 3970, 4030, 4160, 4960, 5161, 6352, 6448, 7936, 7940, 8060, 8320, 9920, 10322, 12307, 12704, 12896, 15880, 16120, 16640, 19840, 20644, 24614, 25408, 25792, 25805, 31760, 32240, 39680, 41288, 49228, 50816, 51584, 51610, 61535, 63520, 64480, 82576, 98456, 101632, 103168, 103220, 123070, 127040, 128960, 159991, 165152, 196912, 206440, 246140, 254080, 257920, 319982, 330304, 393824, 412880, 492280, 508160, 515840, 639964, 660608, 787648, 799955, 825760, 984560, 1279928, 1321216, 1575296, 1599910, 1651520, 1969120, 2559856, 3150592, 3199820, 3303040, 3938240, 5119712, 6399640, 6606080, 7876480, 10239424, 12799280, 15752960, 20478848, 25598560, 40957696, 51197120, 102394240, 204788480]

約数ペア:

[(1, 204788480), (2, 102394240), (4, 51197120), (5, 40957696), (8, 25598560), (10, 20478848), (13, 15752960), (16, 12799280), (20, 10239424), (26, 7876480), (31, 6606080), (32, 6399640), (40, 5119712), (52, 3938240), (62, 3303040), (64, 3199820), (65, 3150592), (80, 2559856), (104, 1969120), (124, 1651520), (128, 1599910), (130, 1575296), (155, 1321216), (160, 1279928), (208, 984560), (248, 825760), (256, 799955), (260, 787648), (310, 660608), (320, 639964), (397, 515840), (403, 508160), (416, 492280), (496, 412880), (520, 393824), (620, 330304), (640, 319982), (794, 257920), (806, 254080), (832, 246140), (992, 206440), (1040, 196912), (1240, 165152), (1280, 159991), (1588, 128960), (1612, 127040), (1664, 123070), (1984, 103220), (1985, 103168), (2015, 101632), (2080, 98456), (2480, 82576), (3176, 64480), (3224, 63520), (3328, 61535), (3968, 51610), (3970, 51584), (4030, 50816), (4160, 49228), (4960, 41288), (5161, 39680), (6352, 32240), (6448, 31760), (7936, 25805), (7940, 25792), (8060, 25408), (8320, 24614), (9920, 20644), (10322, 19840), (12307, 16640), (12704, 16120), (12896, 15880)]