21686560

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{67}}^1$

素因数の和:123

約数の個数: 144

約数和(自身を含む): 63129024

約数和(自身を除く): 41442464

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 56, 67, 68, 70, 80, 85, 112, 119, 134, 136, 140, 160, 170, 224, 238, 268, 272, 280, 289, 335, 340, 469, 476, 536, 544, 560, 578, 595, 670, 680, 938, 952, 1072, 1120, 1139, 1156, 1190, 1340, 1360, 1445, 1876, 1904, 2023, 2144, 2278, 2312, 2345, 2380, 2680, 2720, 2890, 3752, 3808, 4046, 4556, 4624, 4690, 4760, 5360, 5695, 5780, 7504, 7973, 8092, 9112, 9248, 9380, 9520, 10115, 10720, 11390, 11560, 15008, 15946, 16184, 18224, 18760, 19040, 19363, 20230, 22780, 23120, 31892, 32368, 36448, 37520, 38726, 39865, 40460, 45560, 46240, 63784, 64736, 75040, 77452, 79730, 80920, 91120, 96815, 127568, 135541, 154904, 159460, 161840, 182240, 193630, 255136, 271082, 309808, 318920, 323680, 387260, 542164, 619616, 637840, 677705, 774520, 1084328, 1275680, 1355410, 1549040, 2168656, 2710820, 3098080, 4337312, 5421640, 10843280, 21686560]

約数ペア:

[(1, 21686560), (2, 10843280), (4, 5421640), (5, 4337312), (7, 3098080), (8, 2710820), (10, 2168656), (14, 1549040), (16, 1355410), (17, 1275680), (20, 1084328), (28, 774520), (32, 677705), (34, 637840), (35, 619616), (40, 542164), (56, 387260), (67, 323680), (68, 318920), (70, 309808), (80, 271082), (85, 255136), (112, 193630), (119, 182240), (134, 161840), (136, 159460), (140, 154904), (160, 135541), (170, 127568), (224, 96815), (238, 91120), (268, 80920), (272, 79730), (280, 77452), (289, 75040), (335, 64736), (340, 63784), (469, 46240), (476, 45560), (536, 40460), (544, 39865), (560, 38726), (578, 37520), (595, 36448), (670, 32368), (680, 31892), (938, 23120), (952, 22780), (1072, 20230), (1120, 19363), (1139, 19040), (1156, 18760), (1190, 18224), (1340, 16184), (1360, 15946), (1445, 15008), (1876, 11560), (1904, 11390), (2023, 10720), (2144, 10115), (2278, 9520), (2312, 9380), (2345, 9248), (2380, 9112), (2680, 8092), (2720, 7973), (2890, 7504), (3752, 5780), (3808, 5695), (4046, 5360), (4556, 4760), (4624, 4690)]