21720793803

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{233}}^1\times {\mathrm{8369}}^1$

素因数の和:8731

約数の個数: 32

約数和(自身を含む): 30083788800

約数和(自身を除く): 8362994997

約数列:

[1, 3, 47, 79, 141, 233, 237, 699, 3713, 8369, 10951, 11139, 18407, 25107, 32853, 55221, 393343, 661151, 865129, 1180029, 1949977, 1983453, 2595387, 5849931, 31074097, 91648919, 93222291, 154048183, 274946757, 462144549, 7240264601, 21720793803]

約数ペア:

[(1, 21720793803), (3, 7240264601), (47, 462144549), (79, 274946757), (141, 154048183), (233, 93222291), (237, 91648919), (699, 31074097), (3713, 5849931), (8369, 2595387), (10951, 1983453), (11139, 1949977), (18407, 1180029), (25107, 865129), (32853, 661151), (55221, 393343)]