21319744

素因数分解:

$2^6\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:243

約数の個数: 56

約数和(自身を含む): 44346368

約数和(自身を除く): 23026624

約数列:

[1, 2, 4, 8, 16, 32, 43, 61, 64, 86, 122, 127, 172, 244, 254, 344, 488, 508, 688, 976, 1016, 1376, 1952, 2032, 2623, 2752, 3904, 4064, 5246, 5461, 7747, 8128, 10492, 10922, 15494, 20984, 21844, 30988, 41968, 43688, 61976, 83936, 87376, 123952, 167872, 174752, 247904, 333121, 349504, 495808, 666242, 1332484, 2664968, 5329936, 10659872, 21319744]

約数ペア:

[(1, 21319744), (2, 10659872), (4, 5329936), (8, 2664968), (16, 1332484), (32, 666242), (43, 495808), (61, 349504), (64, 333121), (86, 247904), (122, 174752), (127, 167872), (172, 123952), (244, 87376), (254, 83936), (344, 61976), (488, 43688), (508, 41968), (688, 30988), (976, 21844), (1016, 20984), (1376, 15494), (1952, 10922), (2032, 10492), (2623, 8128), (2752, 7747), (3904, 5461), (4064, 5246)]