20951091

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{761}}^1$

素因数の和:816

約数の個数: 48

約数和(自身を含む): 38039040

約数和(自身を除く): 17087949

約数列:

[1, 3, 7, 9, 19, 21, 23, 57, 63, 69, 133, 161, 171, 207, 399, 437, 483, 761, 1197, 1311, 1449, 2283, 3059, 3933, 5327, 6849, 9177, 14459, 15981, 17503, 27531, 43377, 47943, 52509, 101213, 122521, 130131, 157527, 303639, 332557, 367563, 910917, 997671, 1102689, 2327899, 2993013, 6983697, 20951091]

約数ペア:

[(1, 20951091), (3, 6983697), (7, 2993013), (9, 2327899), (19, 1102689), (21, 997671), (23, 910917), (57, 367563), (63, 332557), (69, 303639), (133, 157527), (161, 130131), (171, 122521), (207, 101213), (399, 52509), (437, 47943), (483, 43377), (761, 27531), (1197, 17503), (1311, 15981), (1449, 14459), (2283, 9177), (3059, 6849), (3933, 5327)]