21244672

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{2677}}^1$

素因数の和:2724

約数の個数: 36

約数和(自身を含む): 43790656

約数和(自身を除く): 22545984

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 992, 1984, 2677, 3968, 5354, 7936, 10708, 21416, 42832, 82987, 85664, 165974, 171328, 331948, 342656, 663896, 685312, 1327792, 2655584, 5311168, 10622336, 21244672]

約数ペア:

[(1, 21244672), (2, 10622336), (4, 5311168), (8, 2655584), (16, 1327792), (31, 685312), (32, 663896), (62, 342656), (64, 331948), (124, 171328), (128, 165974), (248, 85664), (256, 82987), (496, 42832), (992, 21416), (1984, 10708), (2677, 7936), (3968, 5354)]