20283315

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:164

約数の個数: 64

約数和(自身を含む): 37255680

約数和(自身を除く): 16972365

約数列:

[1, 3, 5, 13, 15, 39, 41, 43, 59, 65, 123, 129, 177, 195, 205, 215, 295, 533, 559, 615, 645, 767, 885, 1599, 1677, 1763, 2301, 2419, 2537, 2665, 2795, 3835, 5289, 7257, 7611, 7995, 8385, 8815, 11505, 12095, 12685, 22919, 26445, 31447, 32981, 36285, 38055, 68757, 94341, 98943, 104017, 114595, 157235, 164905, 312051, 343785, 471705, 494715, 520085, 1352221, 1560255, 4056663, 6761105, 20283315]

約数ペア:

[(1, 20283315), (3, 6761105), (5, 4056663), (13, 1560255), (15, 1352221), (39, 520085), (41, 494715), (43, 471705), (59, 343785), (65, 312051), (123, 164905), (129, 157235), (177, 114595), (195, 104017), (205, 98943), (215, 94341), (295, 68757), (533, 38055), (559, 36285), (615, 32981), (645, 31447), (767, 26445), (885, 22919), (1599, 12685), (1677, 12095), (1763, 11505), (2301, 8815), (2419, 8385), (2537, 7995), (2665, 7611), (2795, 7257), (3835, 5289)]