20907315

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2$

素因数の和:79

約数の個数: 120

約数和(自身を含む): 46469808

約数和(自身を除く): 25562493

約数列:

[1, 3, 5, 9, 11, 13, 15, 19, 27, 33, 39, 45, 55, 57, 65, 81, 95, 99, 117, 135, 143, 165, 171, 195, 209, 247, 285, 297, 351, 361, 405, 429, 495, 513, 585, 627, 715, 741, 855, 891, 1045, 1053, 1083, 1235, 1287, 1485, 1539, 1755, 1805, 1881, 2145, 2223, 2565, 2717, 3135, 3249, 3705, 3861, 3971, 4455, 4693, 5265, 5415, 5643, 6435, 6669, 7695, 8151, 9405, 9747, 11115, 11583, 11913, 13585, 14079, 16245, 16929, 19305, 19855, 20007, 23465, 24453, 28215, 29241, 33345, 35739, 40755, 42237, 48735, 51623, 57915, 59565, 70395, 73359, 84645, 100035, 107217, 122265, 126711, 146205, 154869, 178695, 211185, 220077, 258115, 321651, 366795, 380133, 464607, 536085, 633555, 774345, 1100385, 1393821, 1608255, 1900665, 2323035, 4181463, 6969105, 20907315]

約数ペア:

[(1, 20907315), (3, 6969105), (5, 4181463), (9, 2323035), (11, 1900665), (13, 1608255), (15, 1393821), (19, 1100385), (27, 774345), (33, 633555), (39, 536085), (45, 464607), (55, 380133), (57, 366795), (65, 321651), (81, 258115), (95, 220077), (99, 211185), (117, 178695), (135, 154869), (143, 146205), (165, 126711), (171, 122265), (195, 107217), (209, 100035), (247, 84645), (285, 73359), (297, 70395), (351, 59565), (361, 57915), (405, 51623), (429, 48735), (495, 42237), (513, 40755), (585, 35739), (627, 33345), (715, 29241), (741, 28215), (855, 24453), (891, 23465), (1045, 20007), (1053, 19855), (1083, 19305), (1235, 16929), (1287, 16245), (1485, 14079), (1539, 13585), (1755, 11913), (1805, 11583), (1881, 11115), (2145, 9747), (2223, 9405), (2565, 8151), (2717, 7695), (3135, 6669), (3249, 6435), (3705, 5643), (3861, 5415), (3971, 5265), (4455, 4693)]