20512191609

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{676903}}^1$

素因数の和:676966

約数の個数: 48

約数和(自身を含む): 37451744512

約数和(自身を除く): 16939552903

約数列:

[1, 3, 7, 9, 13, 21, 37, 39, 63, 91, 111, 117, 259, 273, 333, 481, 777, 819, 1443, 2331, 3367, 4329, 10101, 30303, 676903, 2030709, 4738321, 6092127, 8799739, 14214963, 25045411, 26399217, 42644889, 61598173, 75136233, 79197651, 175317877, 184794519, 225408699, 325590343, 525953631, 554383557, 976771029, 1577860893, 2279132401, 2930313087, 6837397203, 20512191609]

約数ペア:

[(1, 20512191609), (3, 6837397203), (7, 2930313087), (9, 2279132401), (13, 1577860893), (21, 976771029), (37, 554383557), (39, 525953631), (63, 325590343), (91, 225408699), (111, 184794519), (117, 175317877), (259, 79197651), (273, 75136233), (333, 61598173), (481, 42644889), (777, 26399217), (819, 25045411), (1443, 14214963), (2331, 8799739), (3367, 6092127), (4329, 4738321), (10101, 2030709), (30303, 676903)]