20307525

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{823}}^1$

素因数の和:890

約数の個数: 48

約数和(自身を含む): 39235584

約数和(自身を除く): 18928059

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 47, 75, 105, 141, 175, 235, 329, 525, 705, 823, 987, 1175, 1645, 2469, 3525, 4115, 4935, 5761, 8225, 12345, 17283, 20575, 24675, 28805, 38681, 61725, 86415, 116043, 144025, 193405, 270767, 432075, 580215, 812301, 967025, 1353835, 2901075, 4061505, 6769175, 20307525]

約数ペア:

[(1, 20307525), (3, 6769175), (5, 4061505), (7, 2901075), (15, 1353835), (21, 967025), (25, 812301), (35, 580215), (47, 432075), (75, 270767), (105, 193405), (141, 144025), (175, 116043), (235, 86415), (329, 61725), (525, 38681), (705, 28805), (823, 24675), (987, 20575), (1175, 17283), (1645, 12345), (2469, 8225), (3525, 5761), (4115, 4935)]