21285888

素因数分解:

$2^{10}\times 3^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1$

素因数の和:90

約数の個数: 132

約数和(自身を含む): 62932968

約数和(自身を除く): 41647080

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 41, 48, 52, 64, 78, 82, 96, 104, 123, 128, 156, 164, 169, 192, 208, 246, 256, 312, 328, 338, 384, 416, 492, 507, 512, 533, 624, 656, 676, 768, 832, 984, 1014, 1024, 1066, 1248, 1312, 1352, 1536, 1599, 1664, 1968, 2028, 2132, 2496, 2624, 2704, 3072, 3198, 3328, 3936, 4056, 4264, 4992, 5248, 5408, 6396, 6656, 6929, 7872, 8112, 8528, 9984, 10496, 10816, 12792, 13312, 13858, 15744, 16224, 17056, 19968, 20787, 20992, 21632, 25584, 27716, 31488, 32448, 34112, 39936, 41574, 41984, 43264, 51168, 55432, 62976, 64896, 68224, 83148, 86528, 102336, 110864, 125952, 129792, 136448, 166296, 173056, 204672, 221728, 259584, 272896, 332592, 409344, 443456, 519168, 545792, 665184, 818688, 886912, 1330368, 1637376, 1773824, 2660736, 3547648, 5321472, 7095296, 10642944, 21285888]

約数ペア:

[(1, 21285888), (2, 10642944), (3, 7095296), (4, 5321472), (6, 3547648), (8, 2660736), (12, 1773824), (13, 1637376), (16, 1330368), (24, 886912), (26, 818688), (32, 665184), (39, 545792), (41, 519168), (48, 443456), (52, 409344), (64, 332592), (78, 272896), (82, 259584), (96, 221728), (104, 204672), (123, 173056), (128, 166296), (156, 136448), (164, 129792), (169, 125952), (192, 110864), (208, 102336), (246, 86528), (256, 83148), (312, 68224), (328, 64896), (338, 62976), (384, 55432), (416, 51168), (492, 43264), (507, 41984), (512, 41574), (533, 39936), (624, 34112), (656, 32448), (676, 31488), (768, 27716), (832, 25584), (984, 21632), (1014, 20992), (1024, 20787), (1066, 19968), (1248, 17056), (1312, 16224), (1352, 15744), (1536, 13858), (1599, 13312), (1664, 12792), (1968, 10816), (2028, 10496), (2132, 9984), (2496, 8528), (2624, 8112), (2704, 7872), (3072, 6929), (3198, 6656), (3328, 6396), (3936, 5408), (4056, 5248), (4264, 4992)]