21372416

素因数分解:

$2^9\times {\mathrm{13}}^3\times {\mathrm{19}}^1$

素因数の和:76

約数の個数: 80

約数和(自身を含む): 48694800

約数和(自身を除く): 27322384

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 64, 76, 104, 128, 152, 169, 208, 247, 256, 304, 338, 416, 494, 512, 608, 676, 832, 988, 1216, 1352, 1664, 1976, 2197, 2432, 2704, 3211, 3328, 3952, 4394, 4864, 5408, 6422, 6656, 7904, 8788, 9728, 10816, 12844, 15808, 17576, 21632, 25688, 31616, 35152, 41743, 43264, 51376, 63232, 70304, 83486, 86528, 102752, 126464, 140608, 166972, 205504, 281216, 333944, 411008, 562432, 667888, 822016, 1124864, 1335776, 1644032, 2671552, 5343104, 10686208, 21372416]

約数ペア:

[(1, 21372416), (2, 10686208), (4, 5343104), (8, 2671552), (13, 1644032), (16, 1335776), (19, 1124864), (26, 822016), (32, 667888), (38, 562432), (52, 411008), (64, 333944), (76, 281216), (104, 205504), (128, 166972), (152, 140608), (169, 126464), (208, 102752), (247, 86528), (256, 83486), (304, 70304), (338, 63232), (416, 51376), (494, 43264), (512, 41743), (608, 35152), (676, 31616), (832, 25688), (988, 21632), (1216, 17576), (1352, 15808), (1664, 12844), (1976, 10816), (2197, 9728), (2432, 8788), (2704, 7904), (3211, 6656), (3328, 6422), (3952, 5408), (4394, 4864)]