20437065

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:135

約数の個数: 96

約数和(自身を含む): 42456960

約数和(自身を除く): 22019895

約数列:

[1, 3, 5, 9, 11, 15, 19, 33, 41, 45, 53, 55, 57, 95, 99, 123, 159, 165, 171, 205, 209, 265, 285, 369, 451, 477, 495, 583, 615, 627, 779, 795, 855, 1007, 1045, 1353, 1749, 1845, 1881, 2173, 2255, 2337, 2385, 2915, 3021, 3135, 3895, 4059, 5035, 5247, 6519, 6765, 7011, 8569, 8745, 9063, 9405, 10865, 11077, 11685, 15105, 19557, 20295, 23903, 25707, 26235, 32595, 33231, 35055, 41287, 42845, 45315, 55385, 71709, 77121, 97785, 99693, 119515, 123861, 128535, 166155, 206435, 215127, 358545, 371583, 385605, 454157, 498465, 619305, 1075635, 1362471, 1857915, 2270785, 4087413, 6812355, 20437065]

約数ペア:

[(1, 20437065), (3, 6812355), (5, 4087413), (9, 2270785), (11, 1857915), (15, 1362471), (19, 1075635), (33, 619305), (41, 498465), (45, 454157), (53, 385605), (55, 371583), (57, 358545), (95, 215127), (99, 206435), (123, 166155), (159, 128535), (165, 123861), (171, 119515), (205, 99693), (209, 97785), (265, 77121), (285, 71709), (369, 55385), (451, 45315), (477, 42845), (495, 41287), (583, 35055), (615, 33231), (627, 32595), (779, 26235), (795, 25707), (855, 23903), (1007, 20295), (1045, 19557), (1353, 15105), (1749, 11685), (1845, 11077), (1881, 10865), (2173, 9405), (2255, 9063), (2337, 8745), (2385, 8569), (2915, 7011), (3021, 6765), (3135, 6519), (3895, 5247), (4059, 5035)]