205640015

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{281}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 300905280

約数和(自身を除く): 95265265

約数列:

[1, 5, 7, 29, 35, 49, 103, 145, 203, 245, 281, 515, 721, 1015, 1405, 1421, 1967, 2987, 3605, 5047, 7105, 8149, 9835, 13769, 14935, 20909, 25235, 28943, 40745, 57043, 68845, 104545, 144715, 146363, 202601, 285215, 399301, 731815, 839347, 1013005, 1418207, 1996505, 4196735, 5875429, 7091035, 29377145, 41128003, 205640015]

約数ペア:

[(1, 205640015), (5, 41128003), (7, 29377145), (29, 7091035), (35, 5875429), (49, 4196735), (103, 1996505), (145, 1418207), (203, 1013005), (245, 839347), (281, 731815), (515, 399301), (721, 285215), (1015, 202601), (1405, 146363), (1421, 144715), (1967, 104545), (2987, 68845), (3605, 57043), (5047, 40745), (7105, 28943), (8149, 25235), (9835, 20909), (13769, 14935)]