20968510311

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^2\times {\mathrm{383891}}^1$

素因数の和:383941

約数の個数: 48

約数和(自身を含む): 37713550080

約数和(自身を除く): 16745039769

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 289, 357, 459, 867, 1071, 2023, 2601, 3213, 6069, 7803, 18207, 54621, 383891, 1151673, 2687237, 3455019, 6526147, 8061711, 10365057, 19578441, 24185133, 45683029, 58735323, 72555399, 110944499, 137049087, 176205969, 332833497, 411147261, 776611493, 998500491, 1233441783, 2329834479, 2995501473, 6989503437, 20968510311]

約数ペア:

[(1, 20968510311), (3, 6989503437), (7, 2995501473), (9, 2329834479), (17, 1233441783), (21, 998500491), (27, 776611493), (51, 411147261), (63, 332833497), (119, 176205969), (153, 137049087), (189, 110944499), (289, 72555399), (357, 58735323), (459, 45683029), (867, 24185133), (1071, 19578441), (2023, 10365057), (2601, 8061711), (3213, 6526147), (6069, 3455019), (7803, 2687237), (18207, 1151673), (54621, 383891)]