20401276

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{401}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 43223040

約数和(自身を除く): 22821764

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 79, 92, 158, 161, 316, 322, 401, 553, 644, 802, 1106, 1604, 1817, 2212, 2807, 3634, 5614, 7268, 9223, 11228, 12719, 18446, 25438, 31679, 36892, 50876, 63358, 64561, 126716, 129122, 221753, 258244, 443506, 728617, 887012, 1457234, 2914468, 5100319, 10200638, 20401276]

約数ペア:

[(1, 20401276), (2, 10200638), (4, 5100319), (7, 2914468), (14, 1457234), (23, 887012), (28, 728617), (46, 443506), (79, 258244), (92, 221753), (158, 129122), (161, 126716), (316, 64561), (322, 63358), (401, 50876), (553, 36892), (644, 31679), (802, 25438), (1106, 18446), (1604, 12719), (1817, 11228), (2212, 9223), (2807, 7268), (3634, 5614)]