21509235

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2287}}^1$

素因数の和:2328

約数の個数: 48

約数和(自身を含む): 42831360

約数和(自身を除く): 21322125

約数列:

[1, 3, 5, 9, 11, 15, 19, 33, 45, 55, 57, 95, 99, 165, 171, 209, 285, 495, 627, 855, 1045, 1881, 2287, 3135, 6861, 9405, 11435, 20583, 25157, 34305, 43453, 75471, 102915, 125785, 130359, 217265, 226413, 377355, 391077, 477983, 651795, 1132065, 1433949, 1955385, 2389915, 4301847, 7169745, 21509235]

約数ペア:

[(1, 21509235), (3, 7169745), (5, 4301847), (9, 2389915), (11, 1955385), (15, 1433949), (19, 1132065), (33, 651795), (45, 477983), (55, 391077), (57, 377355), (95, 226413), (99, 217265), (165, 130359), (171, 125785), (209, 102915), (285, 75471), (495, 43453), (627, 34305), (855, 25157), (1045, 20583), (1881, 11435), (2287, 9405), (3135, 6861)]