21001552

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:236

約数の個数: 80

約数和(自身を含む): 48871872

約数和(自身を除く): 27870320

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 67, 88, 104, 134, 137, 143, 176, 208, 268, 274, 286, 536, 548, 572, 737, 871, 1072, 1096, 1144, 1474, 1507, 1742, 1781, 2192, 2288, 2948, 3014, 3484, 3562, 5896, 6028, 6968, 7124, 9179, 9581, 11792, 12056, 13936, 14248, 18358, 19162, 19591, 24112, 28496, 36716, 38324, 39182, 73432, 76648, 78364, 100969, 119327, 146864, 153296, 156728, 201938, 238654, 313456, 403876, 477308, 807752, 954616, 1312597, 1615504, 1909232, 2625194, 5250388, 10500776, 21001552]

約数ペア:

[(1, 21001552), (2, 10500776), (4, 5250388), (8, 2625194), (11, 1909232), (13, 1615504), (16, 1312597), (22, 954616), (26, 807752), (44, 477308), (52, 403876), (67, 313456), (88, 238654), (104, 201938), (134, 156728), (137, 153296), (143, 146864), (176, 119327), (208, 100969), (268, 78364), (274, 76648), (286, 73432), (536, 39182), (548, 38324), (572, 36716), (737, 28496), (871, 24112), (1072, 19591), (1096, 19162), (1144, 18358), (1474, 14248), (1507, 13936), (1742, 12056), (1781, 11792), (2192, 9581), (2288, 9179), (2948, 7124), (3014, 6968), (3484, 6028), (3562, 5896)]