20580688

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{229}}^1$

素因数の和:415

約数の個数: 40

約数和(自身を含む): 41325480

約数和(自身を除く): 20744792

約数列:

[1, 2, 4, 8, 16, 41, 82, 137, 164, 229, 274, 328, 458, 548, 656, 916, 1096, 1832, 2192, 3664, 5617, 9389, 11234, 18778, 22468, 31373, 37556, 44936, 62746, 75112, 89872, 125492, 150224, 250984, 501968, 1286293, 2572586, 5145172, 10290344, 20580688]

約数ペア:

[(1, 20580688), (2, 10290344), (4, 5145172), (8, 2572586), (16, 1286293), (41, 501968), (82, 250984), (137, 150224), (164, 125492), (229, 89872), (274, 75112), (328, 62746), (458, 44936), (548, 37556), (656, 31373), (916, 22468), (1096, 18778), (1832, 11234), (2192, 9389), (3664, 5617)]