21001968

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^2\times {\mathrm{863}}^1$

素因数の和:903

約数の個数: 90

約数和(自身を含む): 63719136

約数和(自身を除く): 42717168

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 104, 117, 144, 156, 169, 208, 234, 312, 338, 468, 507, 624, 676, 863, 936, 1014, 1352, 1521, 1726, 1872, 2028, 2589, 2704, 3042, 3452, 4056, 5178, 6084, 6904, 7767, 8112, 10356, 11219, 12168, 13808, 15534, 20712, 22438, 24336, 31068, 33657, 41424, 44876, 62136, 67314, 89752, 100971, 124272, 134628, 145847, 179504, 201942, 269256, 291694, 403884, 437541, 538512, 583388, 807768, 875082, 1166776, 1312623, 1615536, 1750164, 2333552, 2625246, 3500328, 5250492, 7000656, 10500984, 21001968]

約数ペア:

[(1, 21001968), (2, 10500984), (3, 7000656), (4, 5250492), (6, 3500328), (8, 2625246), (9, 2333552), (12, 1750164), (13, 1615536), (16, 1312623), (18, 1166776), (24, 875082), (26, 807768), (36, 583388), (39, 538512), (48, 437541), (52, 403884), (72, 291694), (78, 269256), (104, 201942), (117, 179504), (144, 145847), (156, 134628), (169, 124272), (208, 100971), (234, 89752), (312, 67314), (338, 62136), (468, 44876), (507, 41424), (624, 33657), (676, 31068), (863, 24336), (936, 22438), (1014, 20712), (1352, 15534), (1521, 13808), (1726, 12168), (1872, 11219), (2028, 10356), (2589, 8112), (2704, 7767), (3042, 6904), (3452, 6084), (4056, 5178)]