18987907965

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^2\times {\mathrm{4051}}^1$

素因数の和:4171

約数の個数: 72

約数和(自身を含む): 33688554912

約数和(自身を除く): 14700646947

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 169, 195, 215, 507, 559, 645, 845, 1677, 1849, 2535, 2795, 4051, 5547, 7267, 8385, 9245, 12153, 20255, 21801, 24037, 27735, 36335, 52663, 60765, 72111, 109005, 120185, 157989, 174193, 263315, 312481, 360555, 522579, 684619, 789945, 870965, 937443, 1562405, 2053857, 2264509, 2612895, 3423095, 4687215, 6793527, 7490299, 10269285, 11322545, 22470897, 29438617, 33967635, 37451495, 88315851, 97373887, 112354485, 147193085, 292121661, 441579255, 486869435, 1265860531, 1460608305, 3797581593, 6329302655, 18987907965]

約数ペア:

[(1, 18987907965), (3, 6329302655), (5, 3797581593), (13, 1460608305), (15, 1265860531), (39, 486869435), (43, 441579255), (65, 292121661), (129, 147193085), (169, 112354485), (195, 97373887), (215, 88315851), (507, 37451495), (559, 33967635), (645, 29438617), (845, 22470897), (1677, 11322545), (1849, 10269285), (2535, 7490299), (2795, 6793527), (4051, 4687215), (5547, 3423095), (7267, 2612895), (8385, 2264509), (9245, 2053857), (12153, 1562405), (20255, 937443), (21801, 870965), (24037, 789945), (27735, 684619), (36335, 522579), (52663, 360555), (60765, 312481), (72111, 263315), (109005, 174193), (120185, 157989)]