28771785

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{379}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 57383040

約数和(自身を除く): 28611255

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 241, 315, 379, 723, 1137, 1205, 1687, 1895, 2169, 2653, 3411, 3615, 5061, 5685, 7959, 8435, 10845, 13265, 15183, 17055, 23877, 25305, 39795, 75915, 91339, 119385, 274017, 456695, 639373, 822051, 1370085, 1918119, 3196865, 4110255, 5754357, 9590595, 28771785]

約数ペア:

[(1, 28771785), (3, 9590595), (5, 5754357), (7, 4110255), (9, 3196865), (15, 1918119), (21, 1370085), (35, 822051), (45, 639373), (63, 456695), (105, 274017), (241, 119385), (315, 91339), (379, 75915), (723, 39795), (1137, 25305), (1205, 23877), (1687, 17055), (1895, 15183), (2169, 13265), (2653, 10845), (3411, 8435), (3615, 7959), (5061, 5685)]