20901976

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{8089}}^1$

素因数の和:8131

約数の個数: 32

約数和(自身を含む): 43686000

約数和(自身を除く): 22784024

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292, 2584, 8089, 16178, 32356, 64712, 137513, 153691, 275026, 307382, 550052, 614764, 1100104, 1229528, 2612747, 5225494, 10450988, 20901976]

約数ペア:

[(1, 20901976), (2, 10450988), (4, 5225494), (8, 2612747), (17, 1229528), (19, 1100104), (34, 614764), (38, 550052), (68, 307382), (76, 275026), (136, 153691), (152, 137513), (323, 64712), (646, 32356), (1292, 16178), (2584, 8089)]