20108175

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 35592960

約数和(自身を除く): 15484785

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 103, 137, 285, 309, 411, 475, 515, 685, 1425, 1545, 1957, 2055, 2575, 2603, 3425, 5871, 7725, 7809, 9785, 10275, 13015, 14111, 29355, 39045, 42333, 48925, 65075, 70555, 146775, 195225, 211665, 268109, 352775, 804327, 1058325, 1340545, 4021635, 6702725, 20108175]

約数ペア:

[(1, 20108175), (3, 6702725), (5, 4021635), (15, 1340545), (19, 1058325), (25, 804327), (57, 352775), (75, 268109), (95, 211665), (103, 195225), (137, 146775), (285, 70555), (309, 65075), (411, 48925), (475, 42333), (515, 39045), (685, 29355), (1425, 14111), (1545, 13015), (1957, 10275), (2055, 9785), (2575, 7809), (2603, 7725), (3425, 5871)]