21095776

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:216

約数の個数: 96

約数和(自身を含む): 50168160

約数和(自身を除く): 29072384

約数列:

[1, 2, 4, 8, 13, 16, 17, 19, 26, 32, 34, 38, 52, 68, 76, 104, 136, 152, 157, 208, 221, 247, 272, 304, 314, 323, 416, 442, 494, 544, 608, 628, 646, 884, 988, 1256, 1292, 1768, 1976, 2041, 2512, 2584, 2669, 2983, 3536, 3952, 4082, 4199, 5024, 5168, 5338, 5966, 7072, 7904, 8164, 8398, 10336, 10676, 11932, 16328, 16796, 21352, 23864, 32656, 33592, 34697, 38779, 42704, 47728, 50711, 65312, 67184, 69394, 77558, 85408, 95456, 101422, 134368, 138788, 155116, 202844, 277576, 310232, 405688, 555152, 620464, 659243, 811376, 1110304, 1240928, 1318486, 1622752, 2636972, 5273944, 10547888, 21095776]

約数ペア:

[(1, 21095776), (2, 10547888), (4, 5273944), (8, 2636972), (13, 1622752), (16, 1318486), (17, 1240928), (19, 1110304), (26, 811376), (32, 659243), (34, 620464), (38, 555152), (52, 405688), (68, 310232), (76, 277576), (104, 202844), (136, 155116), (152, 138788), (157, 134368), (208, 101422), (221, 95456), (247, 85408), (272, 77558), (304, 69394), (314, 67184), (323, 65312), (416, 50711), (442, 47728), (494, 42704), (544, 38779), (608, 34697), (628, 33592), (646, 32656), (884, 23864), (988, 21352), (1256, 16796), (1292, 16328), (1768, 11932), (1976, 10676), (2041, 10336), (2512, 8398), (2584, 8164), (2669, 7904), (2983, 7072), (3536, 5966), (3952, 5338), (4082, 5168), (4199, 5024)]