51138880

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1$

素因数の和:696

約数の個数: 112

約数和(自身を含む): 138257280

約数和(自身を除く): 87118400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 64, 65, 76, 80, 95, 104, 130, 152, 160, 190, 208, 247, 260, 304, 320, 380, 416, 494, 520, 608, 647, 760, 832, 988, 1040, 1216, 1235, 1294, 1520, 1976, 2080, 2470, 2588, 3040, 3235, 3952, 4160, 4940, 5176, 6080, 6470, 7904, 8411, 9880, 10352, 12293, 12940, 15808, 16822, 19760, 20704, 24586, 25880, 33644, 39520, 41408, 42055, 49172, 51760, 61465, 67288, 79040, 84110, 98344, 103520, 122930, 134576, 159809, 168220, 196688, 207040, 245860, 269152, 319618, 336440, 393376, 491720, 538304, 639236, 672880, 786752, 799045, 983440, 1278472, 1345760, 1598090, 1966880, 2556944, 2691520, 3196180, 3933760, 5113888, 6392360, 10227776, 12784720, 25569440, 51138880]

約数ペア:

[(1, 51138880), (2, 25569440), (4, 12784720), (5, 10227776), (8, 6392360), (10, 5113888), (13, 3933760), (16, 3196180), (19, 2691520), (20, 2556944), (26, 1966880), (32, 1598090), (38, 1345760), (40, 1278472), (52, 983440), (64, 799045), (65, 786752), (76, 672880), (80, 639236), (95, 538304), (104, 491720), (130, 393376), (152, 336440), (160, 319618), (190, 269152), (208, 245860), (247, 207040), (260, 196688), (304, 168220), (320, 159809), (380, 134576), (416, 122930), (494, 103520), (520, 98344), (608, 84110), (647, 79040), (760, 67288), (832, 61465), (988, 51760), (1040, 49172), (1216, 42055), (1235, 41408), (1294, 39520), (1520, 33644), (1976, 25880), (2080, 24586), (2470, 20704), (2588, 19760), (3040, 16822), (3235, 15808), (3952, 12940), (4160, 12293), (4940, 10352), (5176, 9880), (6080, 8411), (6470, 7904)]