20849648

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{859}}^1$

素因数の和:945

約数の個数: 40

約数和(自身を含む): 42549360

約数和(自身を除く): 21699712

約数列:

[1, 2, 4, 8, 16, 37, 41, 74, 82, 148, 164, 296, 328, 592, 656, 859, 1517, 1718, 3034, 3436, 6068, 6872, 12136, 13744, 24272, 31783, 35219, 63566, 70438, 127132, 140876, 254264, 281752, 508528, 563504, 1303103, 2606206, 5212412, 10424824, 20849648]

約数ペア:

[(1, 20849648), (2, 10424824), (4, 5212412), (8, 2606206), (16, 1303103), (37, 563504), (41, 508528), (74, 281752), (82, 254264), (148, 140876), (164, 127132), (296, 70438), (328, 63566), (592, 35219), (656, 31783), (859, 24272), (1517, 13744), (1718, 12136), (3034, 6872), (3436, 6068)]