20952841

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:198

約数の個数: 32

約数和(自身を含む): 27238400

約数和(自身を除く): 6285559

約数列:

[1, 7, 13, 37, 49, 91, 127, 259, 343, 481, 637, 889, 1651, 1813, 3367, 4459, 4699, 6223, 11557, 12691, 23569, 32893, 43561, 61087, 80899, 164983, 230251, 427609, 566293, 1611757, 2993263, 20952841]

約数ペア:

[(1, 20952841), (7, 2993263), (13, 1611757), (37, 566293), (49, 427609), (91, 230251), (127, 164983), (259, 80899), (343, 61087), (481, 43561), (637, 32893), (889, 23569), (1651, 12691), (1813, 11557), (3367, 6223), (4459, 4699)]